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Created: Sat, Mar 14, 4:05 AM

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	diff --git a/config/default.json b/config/default.json
	index a2522d6..c3cd9c1 100644
	--- a/config/default.json
	+++ b/config/default.json
	@@ -1,69 +1,70 @@
	{
	"containers": {
	"id": {
	"implementations": "impl_fulfill_cluster",
	"clusters": "var_cluster",
	"prototypes": "proto_cluster",
	"linkedlist": "linkedlist"
	},

	"impl": {
	"solid": "solid",
	"onthefly": "on_the_fly"
	}
	},

	"logging": {
	"id": "logging"
	},

	"function-entry": "entry",

	"clasp": {
	"bindings" : {
	"variable": "bind",
	"function": "bind_func",
	"scope": "bind_scope",
	"function_demand" : "bind_function_demand",
	"scope_decision": "bind_scope_decision"
	},

	"context" : {
	"decisions":{
	"dependent": "resolution_dependency"
	- },
	+ }
	},

	"nonevalue": "nonevalue",
	"ret": {
	"symbol": "retv",
	"tag": "ret"
	}
	},

	"tests": {
	"template": "default",

	"templates": {
	"default": "-Adhoc.:Compilation.full_IFStatementWithVariantType:Types.full_VariantType_Switch1",
	"ast": "AST.*",
	"adhocs": "Adhoc.*",
	"effects": "Effects.*",
	"basic": "Attachments.*",
	"context": "Context.*",
	"compilation": "Compilation.*",
	"cfa": "CFA.*",
	"containers": "Containers.*",
	"dfa": "DFA.*",
	"diagnostic": "Diagnostic.*",
	- "dsl": "Interpretation.*",
	+ "dsl": "Interpretation.SwitchVariantAlias-Association.*",
	"ExpressionSerializer": "ExpressionSerializer.*",
	"externc": "InterfaceExternC.*",
	"loops": "Loop.*",
	"modules": "Modules.*",
	+
	"types": "Types.*",
	"vendorsAPI/clang": "ClangAPI.*",
	"vendorsAPI/xml2": "libxml2*"
	}
	}
	}
	diff --git a/cpp/src/ast.cpp b/cpp/src/ast.cpp
	index dd8a17a..3fc3cf2 100644
	--- a/cpp/src/ast.cpp
	+++ b/cpp/src/ast.cpp
	@@ -1,961 +1,964 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* Author: pgess <v.melnychenko@xreate.org>
	* File: ast.cpp
	- */
	+ */



	#include "ast.h"
	#include "ExternLayer.h"
	#include "analysis/typeinference.h"

	#include <stdexcept>
	#include <iostream>

	//TODO BDecl. forbid multiple body declaration (ExprTyped)

	namespace std {

	std::size_t
	hash<xreate::ScopedSymbol>::operator()(xreate::ScopedSymbol const& s) const {
	return s.id ^ (s.version << 2);
	}

	bool
	equal_to<xreate::ScopedSymbol>::operator()(const xreate::ScopedSymbol& __x, const xreate::ScopedSymbol& __y) const {
	return __x.id == __y.id && __x.version == __y.version;
	}

	size_t
	hash<xreate::Symbol>::operator()(xreate::Symbol const& s) const {
	return hash<xreate::ScopedSymbol>()(s.identifier) ^ ((long int) s.scope << 1);
	}

	bool
	equal_to<xreate::Symbol>::operator()(const xreate::Symbol& __x, const xreate::Symbol& __y) const {
	return __x == __y;
	};
	}

	using namespace std;

	namespace xreate {

	Atom<Identifier_t>::Atom(const std::wstring& value) {
	__value = wstring_to_utf8(value);
	}

	Atom<Identifier_t>::Atom(std::string && name) : __value(name) {
	}

	const std::string&
	Atom<Identifier_t>::get() const {
	return __value;
	}

	Atom<Number_t>::Atom(wchar_t* value) {
	//DEBT reconsider number literal recognition
	__value = wcstol(value, 0, 10);
	}

	Atom<Number_t>::Atom(int value)
	: __value(value) {
	}

	double
	Atom<Number_t>::get()const {
	return __value;
	}

	Atom<String_t>::Atom(const std::wstring& value) {
	assert(value.size() >= 2);
	__value = wstring_to_utf8(value.substr(1, value.size() - 2));
	}

	+Atom<String_t>::Atom(std::string && name) : __value(name) {}
	+
	const std::string&
	Atom<String_t>::get() const {
	return __value;
	}

	class ExpressionHints {
	public:

	static bool
	isStringValueValid(const Expression& e) {
	switch (e.__state) {
	case Expression::INVALID:
	assert(false);

	case Expression::IDENT:
	case Expression::STRING:
	return true;

	case Expression::NUMBER:
	case Expression::BINDING:
	return false;

	case Expression::COMPOUND:
	{
	switch (e.op) {
	case Operator::CALL:
	return true;

	default: return false;
	}
	}
	}

	return false;
	}

	static bool
	isDoubleValueValid(const Expression& e) {
	switch (e.__state) {
	case Expression::NUMBER:
	return true;

	case Expression::INVALID:
	assert(false);

	case Expression::IDENT:
	case Expression::STRING:
	case Expression::BINDING:
	return false;

	case Expression::COMPOUND: {
	switch (e.op) {
	case Operator::VARIANT:
	return true;
	default: return false;
	}
	}
	}

	return false;
	}
	};

	class TypesResolver {
	private:
	const AST* ast;
	std::map<std::string, TypeAnnotation> scope;
	std::map<TypeAnnotation, int> signatures;

	ExpandedType expandType(const TypeAnnotation &t, const std::vector<TypeAnnotation> &args = std::vector<TypeAnnotation>()) {
	return TypesResolver(ast, scope, signatures)(t, args);
	}

	std::vector<TypeAnnotation>
	expandOperands(const std::vector<TypeAnnotation>& operands) {
	std::vector<TypeAnnotation> pack;

	pack.reserve(operands.size());
	std::transform(operands.begin(), operands.end(), std::inserter(pack, pack.end()),
	[this](const TypeAnnotation & t) {
	return expandType(t);
	});

	return pack;
	}

	public:

	TypesResolver(const AST* root, const std::map<std::string, TypeAnnotation>& scopeOuter = std::map<std::string, TypeAnnotation>(),
	std::map<TypeAnnotation, int> signaturesOuter = std::map<TypeAnnotation, int>())
	: ast(root), scope(scopeOuter), signatures(signaturesOuter) {
	}

	ExpandedType
	operator()(const TypeAnnotation &t, const std::vector<TypeAnnotation> &args = std::vector<TypeAnnotation>()) {
	//assert(args.size() == t.bindings.size()); // invalid number of arguments
	for (size_t i = 0; i < args.size(); ++i) {
	scope[t.bindings.at(i)] = args.at(i);
	}

	switch (t.__operator) {
	case TypeOperator::ARRAY:
	{
	assert(t.__operands.size() == 1);

	Expanded<TypeAnnotation> elTy = expandType(t.__operands.at(0));
	return ExpandedType(TypeAnnotation(tag_array, elTy, 0));
	}

	case TypeOperator::STRUCT:
	{
	assert(t.__operands.size());

	std::vector<TypeAnnotation>&& packOperands = expandOperands(t.__operands);
	auto typNew = TypeAnnotation(TypeOperator::STRUCT, move(packOperands));
	typNew.fields = t.fields;

	return ExpandedType(move(typNew));
	};

	case TypeOperator::CALL:
	{
	std::string alias = t.__valueCustom;

	//find in local scope:
	TypeAnnotation ty;
	if (scope.count(alias)) {
	ty = scope.at(alias);

	} else if (ast->__indexTypeAliases.count(alias)) {
	ty = ast->__indexTypeAliases.at(alias);

	} else {
	assert(false && "Undefined or external type");
	}

	std::vector<TypeAnnotation>&& operands = expandOperands(t.__operands);
	TypeAnnotation signature(TypeOperator::CALL, move(operands));
	signature.__valueCustom = alias;

	if (signatures.count(signature)) {
	auto link = TypeAnnotation(TypeOperator::LINK,{});
	link.conjuctionId = signatures.at(signature);

	return ExpandedType(move(link));
	}

	int cid = signatures.size();
	signatures[signature] = cid;
	TypeAnnotation tyResult = expandType(ty, operands);
	tyResult.conjuctionId = cid;

	return ExpandedType(move(tyResult));
	};

	case TypeOperator::CUSTOM:
	{
	std::string alias = t.__valueCustom;

	/*
	if (signatures.count(alias)) {
	return ExpandedType(TypeAnnotation(TypeOperator::LINK, {t}));
	}
	signatures[alias].emplace(t);
	*/

	//find in local scope:
	if (scope.count(alias)) {
	return expandType(scope.at(alias));
	}

	// find in general scope:
	if (ast->__indexTypeAliases.count(alias)) {
	return expandType(ast->__indexTypeAliases.at(t.__valueCustom));
	}

	//if type is unknown keep it as is.
	return ExpandedType(TypeAnnotation(t));
	};

	case TypeOperator::ACCESS:
	{
	std::string alias = t.__valueCustom;
	ExpandedType tyAlias = ExpandedType(TypeAnnotation());

	//find in local scope:
	if (scope.count(alias)) {
	tyAlias = expandType(scope.at(alias));

	//find in global scope:
	} else if ((ast->__indexTypeAliases.count(alias))) {
	tyAlias = expandType(ast->__indexTypeAliases.at(alias));

	} else {
	assert(false && "Undefined or external type");
	}

	assert(tyAlias->__operator == TypeOperator::STRUCT);

	for (const string& field : t.fields) {
	auto fieldIt = std::find(tyAlias->fields.begin(), tyAlias->fields.end(), field);
	assert(fieldIt != tyAlias->fields.end() && "unknown field");

	int fieldId = fieldIt - tyAlias->fields.begin();
	tyAlias = expandType(tyAlias->__operands.at(fieldId));
	}

	return tyAlias;
	}

	case TypeOperator::VARIANT:
	{
	return ExpandedType(TypeAnnotation(t));
	}

	case TypeOperator::NONE:
	{
	return ExpandedType(TypeAnnotation(t));
	}

	default:
	assert(false);
	}

	assert(false);
	return ExpandedType(TypeAnnotation());
	}
	};

	TypeAnnotation::TypeAnnotation()
	: __operator(TypeOperator::NONE), __value(TypePrimitive::Invalid) {
	}

	TypeAnnotation::TypeAnnotation(TypePrimitive typ)
	: __value(typ) {
	}

	TypeAnnotation::TypeAnnotation(TypeOperator op, std::initializer_list<TypeAnnotation> operands)
	: __operator(op), __operands(operands) {

	}

	TypeAnnotation::TypeAnnotation(TypeOperator op, std::vector<TypeAnnotation>&& operands)
	: __operator(op), __operands(operands) {
	}

	TypeAnnotation::TypeAnnotation(llvm_array_tag, TypeAnnotation typ, int size)
	: TypeAnnotation(TypeOperator::ARRAY,{typ}) {
	__size = size;
	}

	bool
	TypeAnnotation::isValid() const {
	return !(__value == TypePrimitive::Invalid && __operator == TypeOperator::NONE);
	}

	bool
	TypeAnnotation::operator<(const TypeAnnotation& t) const {
	if (__operator != t.__operator) return __operator < t.__operator;

	if (__operator == TypeOperator::NONE)
	return __value < t.__value;

	if (__operator == TypeOperator::CALL \|\| __operator == TypeOperator::CUSTOM \|\| __operator == TypeOperator::ACCESS) {
	if (__valueCustom != t.__valueCustom)
	return __valueCustom < t.__valueCustom;
	}

	return __operands < t.__operands;
	}

	/*
	TypeAnnotation (struct_tag, std::initializer_list<TypeAnnotation>)
	{}
	*/

	void
	TypeAnnotation::addBindings(std::vector<Atom<Identifier_t>>&& params) {
	bindings.reserve(bindings.size() + params.size());

	std::transform(params.begin(), params.end(), std::inserter(bindings, bindings.end()),
	[](const Atom<Identifier_t>& ident) {
	return ident.get(); });
	}

	void
	TypeAnnotation::addFields(std::vector<Atom<Identifier_t>>&& listFields) {
	fields.reserve(fields.size() + listFields.size());

	std::transform(listFields.begin(), listFields.end(), std::inserter(fields, fields.end()),
	[](const Atom<Identifier_t>& ident) {
	return ident.get(); });
	}

	unsigned int Expression::nextVacantId = 0;

	Expression::Expression(const Atom<Number_t>& number)
	: Expression() {
	__state = NUMBER;
	op = Operator::NONE;
	__valueD = number.get();
	}

	Expression::Expression(const Atom<String_t>& a)
	: Expression() {
	__state = STRING;
	op = Operator::NONE;
	__valueS = a.get();
	}

	Expression::Expression(const Atom<Identifier_t> &ident)
	: Expression() {
	__state = IDENT;
	op = Operator::NONE;
	__valueS = ident.get();
	}

	Expression::Expression(const Operator &oprt, std::initializer_list<Expression> params)
	: Expression() {
	__state = COMPOUND;
	op = oprt;

	if (op == Operator::CALL) {
	assert(params.size() > 0);
	Expression arg = *params.begin();

	assert(arg.__state == Expression::IDENT);
	__valueS = std::move(arg.__valueS);

	operands.insert(operands.end(), params.begin() + 1, params.end());
	return;
	}

	operands.insert(operands.end(), params.begin(), params.end());
	}

	void
	Expression::setOp(Operator oprt) {
	op = oprt;

	switch (op) {
	case Operator::NONE:
	__state = INVALID;
	break;

	default:
	__state = COMPOUND;
	break;
	}
	}

	void
	Expression::addArg(Expression &&arg) {
	operands.push_back(arg);
	}

	void
	Expression::addTags(const std::list<Expression> tags) const {
	std::transform(tags.begin(), tags.end(), std::inserter(this->tags, this->tags.end()),
	[](const Expression & tag) {
	return make_pair(tag.getValueString(), tag);
	});
	}

	void
	Expression::addBindings(std::initializer_list<Atom<Identifier_t>> params) {
	addBindings(params.begin(), params.end());
	}

	void
	Expression::bindType(TypeAnnotation t) {
	type = move(t);
	}

	void
	Expression::addBlock(ManagedScpPtr scope) {
	blocks.push_back(scope.operator->());
	}

	const std::vector<Expression>&
	Expression::getOperands() const {
	return operands;
	}

	double
	Expression::getValueDouble() const {
	return __valueD;
	}

	const std::string&
	Expression::getValueString() const {
	return __valueS;
	}

	void
	Expression::setValue(const Atom<Identifier_t>&& v) {
	__valueS = v.get();
	}

	void Expression::setValueDouble(double value) {
	__valueD = value;
	}

	bool
	Expression::isValid() const {
	return (__state != INVALID);
	}

	bool
	Expression::isDefined() const {
	return (__state != BINDING);
	}

	Expression::Expression()
	: __state(INVALID), op(Operator::NONE), id(nextVacantId++) {
	}

	namespace details { namespace incomplete {

	AST::AST() {
	Attachments::init<versions::VariableVersion>();
	Attachments::init<Symbol>();
	}

	void
	AST::addInterfaceData(const ASTInterface& interface, Expression&& data) {
	__interfacesData.emplace(interface, move(data));
	}

	void
	AST::addDFAData(Expression &&data) {
	__dfadata.push_back(data);
	}

	void
	AST::addExternData(ExternData &&data) {
	__externdata.insert(__externdata.end(), data.entries.begin(), data.entries.end());
	}

	void
	AST::add(Function* f) {
	__functions.push_back(f);
	__indexFunctions.emplace(f->getName(), __functions.size() - 1);
	}

	void
	AST::add(MetaRuleAbstract *r) {
	__rules.push_back(r);
	}

	void
	AST::add(TypeAnnotation t, Atom<Identifier_t> alias) {
	if (t.__operator == TypeOperator::VARIANT) {
	for (int i = 0, size = t.fields.size(); i < size; ++i) {
	__dictVariants.emplace(t.fields[i], make_pair(t, i));
	}
	}

	__indexTypeAliases.emplace(alias.get(), move(t));
	}

	ManagedScpPtr
	AST::add(CodeScope* scope) {
	this->__scopes.push_back(scope);
	return ManagedScpPtr(this->__scopes.size() - 1, &this->__scopes);
	}

	std::string
	AST::getModuleName() {
	const std::string name = "moduleTest";

	return name;
	}

	ManagedPtr<Function>
	AST::findFunction(const std::string& name) {
	int count = __indexFunctions.count(name);
	if (!count) {
	return ManagedFnPtr::Invalid();
	}

	assert(count == 1);

	auto range = __indexFunctions.equal_range(name);
	return ManagedPtr<Function>(range.first->second, &this->__functions);
	}

	std::list<ManagedFnPtr>
	AST::getAllFunctions() const {
	const size_t size = __functions.size();

	std::list<ManagedFnPtr> result;
	for (size_t i = 0; i < size; ++i) {
	result.push_back(ManagedFnPtr(i, &this->__functions));
	}

	return result;
	}

	//TASK select default specializations

	std::list<ManagedFnPtr>
	AST::getFunctionVariants(const std::string& name) const {
	auto functions = __indexFunctions.equal_range(name);

	std::list<ManagedFnPtr> result;
	std::transform(functions.first, functions.second, inserter(result, result.end()),
	[this](auto f) {
	return ManagedFnPtr(f.second, &this->__functions);
	});

	return result;
	}

	template<>
	ManagedPtr<Function>
	AST::begin<Function>() {
	return ManagedPtr<Function>(0, &this->__functions);
	}

	template<>
	ManagedPtr<CodeScope>
	AST::begin<CodeScope>() {
	return ManagedPtr<CodeScope>(0, &this->__scopes);
	}

	template<>
	ManagedPtr<MetaRuleAbstract>
	AST::begin<MetaRuleAbstract>() {
	return ManagedPtr<MetaRuleAbstract>(0, &this->__rules);
	}

	void
	AST::recognizeVariantConstructor(Expression& function) {
	assert(function.op == Operator::CALL);

	std::string variant = function.getValueString();
	if (!__dictVariants.count(variant)) {
	return;
	}

	auto record = __dictVariants.at(variant);
	const TypeAnnotation& typ = record.first;

	function.op = Operator::VARIANT;
	function.setValueDouble(record.second);
	function.type = typ;
	}

	Atom<Number_t>
	AST::recognizeVariantConstructor(Atom<Identifier_t> ident) {
	std::string variant = ident.get();
	assert(__dictVariants.count(variant) && "Can't recognize variant constructor");
	auto record = __dictVariants.at(variant);

	return Atom<Number_t>(record.second);
	}

	void
	AST::postponeIdentifier(CodeScope* scope, const Expression& id) {
	bucketUnrecognizedIdentifiers.emplace(scope, id);
	}

	void
	AST::recognizePostponedIdentifiers() {
	for (const auto& identifier : bucketUnrecognizedIdentifiers) {
	if (!identifier.first->recognizeIdentifier(identifier.second)) {
	//exception: Ident not found
	std::cout << "Unknown symbol: " << identifier.second.getValueString() << std::endl;
	assert(false && "Symbol not found");
	}
	}
	}

	xreate::AST*
	AST::finalize() {
	//all finalization steps:
	recognizePostponedIdentifiers();

	return reinterpret_cast<xreate::AST*> (this);
	}

	} } //namespace details::incomplete

	Expanded<TypeAnnotation>
	AST::findType(const std::string& name) {
	// find in general scope:
	if (__indexTypeAliases.count(name))
	return expandType(__indexTypeAliases.at(name));

	//if type is unknown keep it as is.
	TypeAnnotation t(TypeOperator::CUSTOM,{});
	t.__valueCustom = name;
	return ExpandedType(move(t));
	}

	Expanded<TypeAnnotation>
	AST::expandType(const TypeAnnotation &t) const {
	return TypesResolver(this)(t);
	}

	ExpandedType
	AST::getType(const Expression& expression) {
	return typeinference::getType(expression, *this);
	}

	Function::Function(const Atom<Identifier_t>& name)
	: __entry(new CodeScope(0)) {
	__name = name.get();
	}

	void
	Function::addTag(Expression&& tag, const TagModifier mod) {
	string name = tag.getValueString();
	__tags.emplace(move(name), move(tag));
	}

	const std::map<std::string, Expression>&
	Function::getTags() const {
	return __tags;
	}

	CodeScope*
	Function::getEntryScope() const {
	return __entry;
	}

	void
	Function::addBinding(Atom <Identifier_t>&& name, Expression&& argument) {
	__entry->addBinding(move(name), move(argument));
	}

	const std::string&
	Function::getName() const {
	return __name;
	}

	ScopedSymbol
	CodeScope::registerIdentifier(const Expression& identifier) {
	versions::VariableVersion version = Attachments::get<versions::VariableVersion>(identifier, versions::VERSION_NONE);

	auto result = __identifiers.emplace(identifier.getValueString(), __vCounter);
	if (result.second) {
	++__vCounter;
	return { __vCounter - 1, version };
	}

	return { result.first->second, version };
	}

	bool
	CodeScope::recognizeIdentifier(const Expression& identifier) const {
	versions::VariableVersion version = Attachments::get<versions::VariableVersion>(identifier, versions::VERSION_NONE);
	const std::string& name = identifier.getValueString();

	//search identifier in the current block
	if (__identifiers.count(name)) {
	VNameId id = __identifiers.at(name);

	Symbol s;
	s.identifier = ScopedSymbol{id, version};
	s.scope = const_cast<CodeScope*> (this);
	Attachments::put<Symbol>(identifier, s);

	return true;
	}

	//search in the parent scope
	if (__parent) {
	return __parent->recognizeIdentifier(identifier);
	}

	return false;
	}

	ScopedSymbol
	CodeScope::getSymbol(const std::string& alias) {
	assert(__identifiers.count(alias));
	VNameId id = __identifiers.at(alias);

	return {id, versions::VERSION_NONE };
	}

	void
	CodeScope::addBinding(Expression&& var, Expression&& argument) {
	argument.__state = Expression::BINDING;

	__bindings.push_back(var.getValueString());
	ScopedSymbol binding = registerIdentifier(var);
	__declarations[binding] = move(argument);
	}

	void
	CodeScope::addDeclaration(Expression&& var, Expression&& body) {
	ScopedSymbol s = registerIdentifier(var);
	__declarations[s] = move(body);
	}

	CodeScope::CodeScope(CodeScope* parent)
	: __parent(parent) {
	}

	CodeScope::~CodeScope() {
	}

	void
	CodeScope::setBody(const Expression &body) {
	+ assert(__declarations.count(ScopedSymbol::RetSymbol)==0 && "Attempt to reassign scope body");
	__declarations[ScopedSymbol::RetSymbol] = body;
	}

	Expression&
	CodeScope::getBody() {
	return __declarations[ScopedSymbol::RetSymbol];
	}

	const Expression&
	CodeScope::getDeclaration(const Symbol& symbol) {
	CodeScope* self = symbol.scope;
	return self->getDeclaration(symbol.identifier);
	}

	const Expression&
	CodeScope::getDeclaration(const ScopedSymbol& symbol) {
	assert(__declarations.count(symbol) && "Symbol's declaration not found");

	return __declarations.at(symbol);
	}

	void
	RuleArguments::add(const Atom<Identifier_t> &arg, DomainAnnotation typ) {
	emplace_back(arg.get(), typ);
	}

	void
	RuleGuards::add(Expression&& e) {
	push_back(e);
	}

	MetaRuleAbstract::
	MetaRuleAbstract(RuleArguments&& args, RuleGuards&& guards)
	: __args(std::move(args)), __guards(std::move(guards)) {
	}

	MetaRuleAbstract::~MetaRuleAbstract() {
	}

	RuleWarning::
	RuleWarning(RuleArguments&& args, RuleGuards&& guards, Expression&& condition, Atom<String_t>&& message)
	: MetaRuleAbstract(std::move(args), std::move(guards)), __message(message.get()), __condition(condition) {
	}

	RuleWarning::~RuleWarning() {
	}

	void
	RuleWarning::compile(ClaspLayer& layer) {
	//TODO restore addRuleWarning
	//layer.addRuleWarning(*this);
	}

	bool operator<(const ScopedSymbol& s1, const ScopedSymbol& s2) {
	return (s1.id < s2.id) \|\| (s1.id == s2.id && s1.version < s2.version);
	}

	bool operator==(const ScopedSymbol& s1, const ScopedSymbol& s2) {
	return (s1.id == s2.id) && (s1.version == s2.version);
	}

	bool operator<(const Symbol& s1, const Symbol& s2) {
	return (s1.scope < s2.scope) \|\| (s1.scope == s2.scope && s1.identifier < s2.identifier);
	}

	bool operator==(const Symbol& s1, const Symbol& s2) {
	return (s1.scope == s2.scope) && (s1.identifier == s2.identifier);
	}

	bool operator<(const Expression&a, const Expression&b) {
	if (a.__state != b.__state) return a.__state < b.__state;
	assert(a.__state != Expression::INVALID);
	switch (a.__state) {
	case Expression::IDENT:
	case Expression::STRING:
	return a.getValueString() < b.getValueString();
	-
	+
	case Expression::NUMBER:
	return a.getValueDouble() < b.getValueDouble();

	case Expression::COMPOUND:
	{
	assert(a.blocks.size() == 0);
	assert(b.blocks.size() == 0);

	if (a.op != b.op) {
	return a.op < b.op;
	}

	bool flagAValid = ExpressionHints::isStringValueValid(a);
	bool flagBValid = ExpressionHints::isStringValueValid(b);

	if (flagAValid != flagBValid) {
	return flagAValid < flagBValid;
	}

	if (flagAValid) {
	if (a.getValueString() != b.getValueString()) {
	return a.getValueString() < b.getValueString();
	}
	}

	flagAValid = ExpressionHints::isDoubleValueValid(a);
	flagBValid = ExpressionHints::isDoubleValueValid(b);

	if (flagAValid != flagBValid) {
	return flagAValid < flagBValid;
	}

	if (flagAValid) {
	if (a.getValueDouble() != b.getValueDouble()) {
	return a.getValueDouble() < b.getValueDouble();
	}
	}

	if (a.operands.size() != b.operands.size()) {
	return (a.operands.size() < b.operands.size());
	}

	for (size_t i = 0; i < a.operands.size(); ++i) {
	bool result = a.operands[i] < b.operands[i];
	if (result) return true;
	}

	return false;
	}

	case Expression::BINDING:
	case Expression::INVALID:
	assert(false);
	}

	return false;
	}

	bool
	Expression::operator==(const Expression& other) const {
	if (this->__state != other.__state) return false;

	if (ExpressionHints::isStringValueValid(*this)) {
	if (this->__valueS != other.__valueS) return false;
	}

	if (ExpressionHints::isDoubleValueValid(*this)) {
	if (this->__valueD != other.__valueD) return false;
	}

	if (this->__state != Expression::COMPOUND) {
	return true;
	}

	if (this->op != other.op) {
	return false;
	}

	if (this->operands.size() != other.operands.size()) {
	return false;
	}

	for (size_t i = 0; i<this->operands.size(); ++i) {
	if (!(this->operands[i] == other.operands[i])) return false;
	}

	assert(!this->blocks.size());
	assert(!other.blocks.size());

	return true;
	}

	const ScopedSymbol
	ScopedSymbol::RetSymbol = ScopedSymbol{0, versions::VERSION_NONE};

	} //end of namespace xreate




	diff --git a/cpp/src/ast.h b/cpp/src/ast.h
	index 1216df3..5833e4d 100644
	--- a/cpp/src/ast.h
	+++ b/cpp/src/ast.h
	@@ -1,584 +1,585 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* Author: pgess <v.melnychenko@xreate.org>
	* File: ast.h
	*/

	#ifndef AST_H
	#define AST_H

	#include "attachments.h"

	#include <vector>
	#include <stdlib.h>
	#include <string>
	#include <list>
	#include <unordered_map>
	#include <unordered_set>
	#include <climits>
	#include "utils.h"
	#include <algorithm>

	namespace llvm {
	class Value;
	}

	namespace xreate {
	struct ScopedSymbol;
	struct Symbol;
	}

	namespace std {

	template<>
	struct hash<xreate::ScopedSymbol> {
	std::size_t operator()(xreate::ScopedSymbol const& s) const;
	};

	template<>
	struct equal_to<xreate::ScopedSymbol> {
	bool operator()(const xreate::ScopedSymbol& __x, const xreate::ScopedSymbol& __y) const;
	};

	template<>
	struct hash<xreate::Symbol> {
	size_t operator()(xreate::Symbol const& s) const;
	};

	template<>
	struct equal_to<xreate::Symbol> {
	bool operator()(const xreate::Symbol& __x, const xreate::Symbol& __y) const;
	};
	}

	namespace xreate {

	struct String_t {
	};

	struct Identifier_t {
	};

	struct Number_t {
	};

	struct Type_t {
	};

	template<typename A>
	class Atom {
	};

	//DEBT hold for all atoms/identifiers Parser::Token data, like line:col position
	template<> class
	Atom<Identifier_t> {
	public:
	Atom(const std::wstring& value);
	Atom(std::string && name);
	const std::string& get() const;

	private:
	std::string __value;
	};

	template<>
	class Atom<Number_t> {
	public:
	Atom(wchar_t* value);
	Atom(int value);
	double get()const;

	private:
	double __value;
	};

	template<>
	class Atom<String_t> {
	public:
	Atom(const std::wstring& value);
	+ Atom(std::string && name);
	const std::string& get() const;

	private:
	std::string __value;
	};

	enum class TypePrimitive {
	Invalid, Bool, I8, I32, I64, Num, Int, Float, String
	};

	enum class TypeOperator {
	NONE, CALL, CUSTOM, VARIANT, ARRAY, STRUCT, ACCESS, LINK
	};

	struct llvm_array_tag {
	};

	struct struct_tag {
	};
	const llvm_array_tag tag_array = llvm_array_tag();
	const struct_tag tag_struct = struct_tag();

	class TypeAnnotation {
	public:
	TypeAnnotation();
	TypeAnnotation(const Atom<Type_t>& typ);
	TypeAnnotation(TypePrimitive typ);
	TypeAnnotation(llvm_array_tag, TypeAnnotation typ, int size);

	TypeAnnotation(TypeOperator op, std::initializer_list<TypeAnnotation> operands);
	TypeAnnotation(TypeOperator op, std::vector<TypeAnnotation>&& operands);
	void addBindings(std::vector<Atom<Identifier_t>>&& params);
	void addFields(std::vector<Atom<Identifier_t>>&& listFields);
	bool operator<(const TypeAnnotation& t) const;
	// TypeAnnotation (struct_tag, std::initializer_list<TypePrimitive>);

	bool isValid() const;

	TypeOperator __operator = TypeOperator::NONE;

	std::vector<TypeAnnotation> __operands;
	TypePrimitive __value;
	std::string __valueCustom;
	int conjuctionId = -1; //conjunction point id (relevant for recursive types)

	uint64_t __size = 0;
	std::vector<std::string> fields;
	std::vector<std::string> bindings;
	private:
	};

	enum class Operator {
	ADD, SUB, MUL, DIV,
	EQU, NE, NEG, LSS,
	LSE, GTR, GTE, LIST,
	LIST_RANGE, LIST_NAMED,
	CALL, CALL_INTRINSIC, NONE,
	IMPL/* implication */, MAP,
	FOLD, FOLD_INF, LOOP_CONTEXT,
	INDEX, IF, SWITCH, SWITCH_ADHOC, SWITCH_VARIANT,
	CASE, CASE_DEFAULT, LOGIC_AND,
	ADHOC, CONTEXT_RULE, VARIANT
	};

	class Function;
	class AST;
	class CodeScope;
	class MetaRuleAbstract;

	template<class Target>
	struct ManagedPtr {

	static ManagedPtr<Target> Invalid() {
	return ManagedPtr<Target>();
	}

	ManagedPtr() : __storage(0) {
	}

	ManagedPtr(unsigned int id, const std::vector<Target> storage)
	: __id(id), __storage(storage) {
	}

	Target&
	operator*() const {
	assert(isValid() && "Invalid Ptr");
	return *__storage->at(__id);
	}

	void operator=(const ManagedPtr<Target>& other) {
	__id = other.__id;
	__storage = other.__storage;
	}

	bool
	operator==(const ManagedPtr<Target>& other) {
	return isValid() && (__id == other.__id);
	}

	Target*
	operator->() const noexcept {
	assert(isValid() && "Invalid Ptr");
	return __storage->at(__id);
	}

	inline bool isValid() const {
	return (__storage) && (0 <= __id) && (__id < __storage->size());
	}

	inline operator bool() const {
	return isValid();
	}

	ManagedPtr<Target>& operator++() {
	++__id;
	return *this;
	}

	inline unsigned int id() const {
	return __id;
	}

	private:
	unsigned int __id = 0;
	const std::vector<Target> __storage = 0;
	};

	typedef ManagedPtr<Function> ManagedFnPtr;
	typedef ManagedPtr<CodeScope> ManagedScpPtr;
	typedef ManagedPtr<MetaRuleAbstract> ManagedRulePtr;
	const ManagedScpPtr NO_SCOPE = ManagedScpPtr(UINT_MAX, 0);

	//To update ExpressionHints in case of any changes
	struct Expression {
	friend class CodeScope;
	friend class ClaspLayer;
	friend class CFAPass;
	friend class ExpressionHints;

	Expression(const Operator &oprt, std::initializer_list<Expression> params);
	Expression(const Atom<Identifier_t>& ident);
	Expression(const Atom<Number_t>& number);
	Expression(const Atom<String_t>& a);

	Expression();

	void setOp(Operator oprt);
	void addArg(Expression&& arg);
	void addBindings(std::initializer_list<Atom<Identifier_t>> params);
	void bindType(TypeAnnotation t);

	template<class InputIt>
	void addBindings(InputIt paramsBegin, InputIt paramsEnd);
	void addTags(const std::list<Expression> tags) const;
	void addBlock(ManagedScpPtr scope);

	const std::vector<Expression>& getOperands() const;
	double getValueDouble() const;
	void setValueDouble(double value);
	const std::string& getValueString() const;
	void setValue(const Atom<Identifier_t>&& v);
	bool isValid() const;
	bool isDefined() const;


	bool operator==(const Expression& other) const;

	enum {
	INVALID, COMPOUND, IDENT, NUMBER, STRING, BINDING
	} __state = INVALID;

	Operator op;
	unsigned int id;
	std::vector<std::string> bindings;
	std::map<std::string, size_t> __indexBindings;
	std::vector<Expression> operands;
	TypeAnnotation type;

	mutable std::map<std::string, Expression> tags;
	std::list<CodeScope*> blocks;

	private:
	std::string __valueS;
	double __valueD;

	static unsigned int nextVacantId;
	};

	bool operator<(const Expression&, const Expression&);

	template<class InputIt>
	void Expression::addBindings(InputIt paramsBegin, InputIt paramsEnd) {
	size_t index = bindings.size();

	std::transform(paramsBegin, paramsEnd, std::inserter(bindings, bindings.end()),
	[&index, this] (const Atom<Identifier_t> atom) {
	std::string key = atom.get();
	this->__indexBindings[key] = index++;
	return key;
	});
	}

	typedef std::list<Expression> ExpressionList;

	enum class TagModifier {
	NONE, ASSERT, REQUIRE
	};

	enum class DomainAnnotation {
	FUNCTION, VARIABLE
	};

	class RuleArguments : public std::vector<std::pair<std::string, DomainAnnotation>>
	{
	public:
	void add(const Atom<Identifier_t>& name, DomainAnnotation typ);
	};

	class RuleGuards : public std::vector<Expression> {
	public:
	void add(Expression&& e);
	};


	class ClaspLayer;
	class LLVMLayer;

	class MetaRuleAbstract {
	public:
	MetaRuleAbstract(RuleArguments&& args, RuleGuards&& guards);
	virtual ~MetaRuleAbstract();
	virtual void compile(ClaspLayer& layer) = 0;
	protected:
	RuleArguments __args;
	RuleGuards __guards;
	};

	class RuleWarning : public MetaRuleAbstract {
	friend class ClaspLayer;
	public:
	RuleWarning(RuleArguments&& args, RuleGuards&& guards, Expression&& condition, Atom<String_t>&& message);
	virtual void compile(ClaspLayer& layer);
	~RuleWarning();

	private:
	std::string __message;
	Expression __condition;
	};

	typedef unsigned int VNameId;

	namespace versions {
	typedef int VariableVersion;
	const VariableVersion VERSION_NONE = -2;
	const VariableVersion VERSION_INIT = 0;
	}

	template<>
	struct AttachmentsDict<versions::VariableVersion> {
	typedef versions::VariableVersion Data;
	static const unsigned int key = 6;
	};

	struct ScopedSymbol {
	VNameId id;
	versions::VariableVersion version;

	static const ScopedSymbol RetSymbol;
	};

	struct Symbol {
	ScopedSymbol identifier;
	CodeScope * scope;
	};

	template<>
	struct AttachmentsDict<Symbol> {
	typedef Symbol Data;
	static const unsigned int key = 7;
	};

	typedef std::pair<Expression, TagModifier> Tag;

	bool operator<(const ScopedSymbol& s1, const ScopedSymbol& s2);
	bool operator==(const ScopedSymbol& s1, const ScopedSymbol& s2);
	bool operator<(const Symbol& s1, const Symbol& s2);
	bool operator==(const Symbol& s1, const Symbol& s2);

	class CodeScope {
	friend class Function;
	friend class PassManager;

	public:
	CodeScope(CodeScope* parent = 0);
	void setBody(const Expression& body);
	Expression& getBody();
	void addDeclaration(Expression&& var, Expression&& body);
	void addBinding(Expression&& var, Expression&& argument);
	static const Expression& getDeclaration(const Symbol& symbol);
	const Expression& getDeclaration(const ScopedSymbol& symbol);

	~CodeScope();

	std::vector<std::string> __bindings;
	std::map<std::string, VNameId> __identifiers;
	CodeScope* __parent;

	//TODO move __definitions to SymbolsAttachments data
	//NOTE: definition of return type has zero(0) variable index
	std::unordered_map<ScopedSymbol, Expression> __declarations;
	std::vector<Expression> tags;
	std::vector<Expression> contextRules;
	private:
	VNameId __vCounter = 1;
	ScopedSymbol registerIdentifier(const Expression& identifier);

	public:
	bool recognizeIdentifier(const Expression& identifier) const;
	ScopedSymbol getSymbol(const std::string& alias);
	};

	class Function {
	friend class Expression;
	friend class CodeScope;
	friend class AST;

	public:
	Function(const Atom<Identifier_t>& name);

	void addBinding(Atom <Identifier_t>&& name, Expression&& argument);
	void addTag(Expression&& tag, const TagModifier mod);

	const std::string& getName() const;
	const std::map<std::string, Expression>& getTags() const;
	CodeScope* getEntryScope() const;
	CodeScope* __entry;
	std::string __name;
	bool isPrefunction = false; //SECTIONTAG adhoc Function::isPrefunction flag

	Expression guardContext;
	private:

	std::map<std::string, Expression> __tags;
	};


	class ExternData;

	struct ExternEntry {
	std::string package;
	std::vector<std::string> headers;
	};

	typedef Expanded<TypeAnnotation> ExpandedType;

	enum ASTInterface {
	CFA, DFA, Extern, Adhoc
	};

	struct FunctionSpecialization {
	std::string guard;
	size_t id;
	};

	struct FunctionSpecializationQuery {
	std::unordered_set<std::string> context;
	};

	template<>
	struct AttachmentsId<Expression>{
	static unsigned int getId(const Expression& expression){
	return expression.id;
	}
	};

	template<>
	struct AttachmentsId<Symbol>{
	static unsigned int getId(const Symbol& s){
	return s.scope->__declarations.at(s.identifier).id;
	}
	};

	template<>
	struct AttachmentsId<ManagedFnPtr>{
	static unsigned int getId(const ManagedFnPtr& f){
	const Symbol symbolFunction{ScopedSymbol::RetSymbol, f->getEntryScope()};

	return AttachmentsId<Symbol>::getId(symbolFunction);
	}
	};

	namespace details { namespace incomplete {
	class AST {
	public:
	AST();

	//TASK extern and DFA interfaces move into addInterfaceData
	/**
	* DFA Interface
	*/
	void addDFAData(Expression&& data);

	/**
	* Extern Interface
	*/
	void addExternData(ExternData&& data);

	void addInterfaceData(const ASTInterface& interface, Expression&& data);
	void add(Function* f);

	void add(MetaRuleAbstract* r);
	ManagedScpPtr add(CodeScope* scope);

	std::string getModuleName();
	ManagedPtr<Function> findFunction(const std::string& name);

	typedef std::multimap<std::string, unsigned int> FUNCTIONS_REGISTRY;
	std::list<ManagedFnPtr> getAllFunctions() const;
	std::list<ManagedFnPtr> getFunctionVariants(const std::string& name) const;


	template<class Target>
	ManagedPtr<Target> begin();

	std::vector<ExternEntry> __externdata;
	std::list<Expression> __dfadata; //TODO move to more appropriate place
	std::list<std::string> __rawImports; //TODO move to more appropriate place
	std::multimap<ASTInterface, Expression> __interfacesData; //TODO CFA data here.

	private:
	std::vector<MetaRuleAbstract*> __rules;
	std::vector<Function*> __functions;
	std::vector<CodeScope*> __scopes;

	FUNCTIONS_REGISTRY __indexFunctions;


	// *** TYPES SECTION ***
	public:
	std::map<std::string, TypeAnnotation> __indexTypeAliases;

	void add(TypeAnnotation t, Atom<Identifier_t> alias);

	// *** SYMBOL RECOGNITION ***
	//TODO revisit enums/variants, move to codescope
	void recognizeVariantConstructor(Expression& function);
	Atom<Number_t> recognizeVariantConstructor(Atom<Identifier_t> ident);

	private:
	std::map<std::string, std::pair<TypeAnnotation, int>> __dictVariants;

	public:
	std::set<std::pair<CodeScope*, Expression>> bucketUnrecognizedIdentifiers;

	public:
	void postponeIdentifier(CodeScope* scope, const Expression& id);
	void recognizePostponedIdentifiers();
	xreate::AST* finalize();
	};

	template<>
	ManagedPtr<Function>
	AST::begin<Function>();

	template<>
	ManagedPtr<CodeScope>
	AST::begin<CodeScope>();

	template<>
	ManagedPtr<MetaRuleAbstract>
	AST::begin<MetaRuleAbstract>();

	} } // namespace details::incomplete

	class AST : public details::incomplete::AST {
	public:

	AST() : details::incomplete::AST() {}
	ExpandedType expandType(const TypeAnnotation &t) const;
	ExpandedType findType(const std::string& name);
	ExpandedType getType(const Expression& expression);
	};
	}
	#endif // AST_H
	diff --git a/cpp/src/clasplayer.cpp b/cpp/src/clasplayer.cpp
	index 6bf8895..e1b6ec5 100644
	--- a/cpp/src/clasplayer.cpp
	+++ b/cpp/src/clasplayer.cpp
	@@ -1,283 +1,343 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* Author: pgess <v.melnychenko@xreate.org>
	* File: clasplayer.cpp
	- */
	+ */

	#include "clasplayer.h"

	#include <iostream>
	#include "utils.h"
	#include <boost/format.hpp>
	#include <boost/algorithm/string/join.hpp>
	#include <gringo/scripts.hh>

	#include "analysis/aux.h"
	#include "analysis/DominatorsTreeAnalysisProvider.h"
	#include "analysis/cfagraph.h"
	#include "analysis/dfagraph.h"

	using namespace std;

	//TODO escape identifiers started with upper case symbol
	namespace xreate {

	- void
	- ClaspLayer::printWarnings(std::ostream& out)
	- {
	- const std::string warningTag = "warning";
	+void
	+ClaspLayer::printWarnings(std::ostream& out)
	+{
	+ const std::string warningTag = "warning";

	- auto warningsRange = __model.equal_range(warningTag);
	+ auto warningsRange = __model.equal_range(warningTag);

	- for (auto warning=warningsRange.first; warning!= warningsRange.second; ++warning) {
	- unsigned int warningId;
	+ for (auto warning=warningsRange.first; warning!= warningsRange.second; ++warning) {
	+ unsigned int warningId;

	- Gringo::Symbol params;
	- std::tie(warningId, params) = parse<unsigned int, Gringo::Symbol>(warning->second);
	+ Gringo::Symbol params;
	+ std::tie(warningId, params) = parse<unsigned int, Gringo::Symbol>(warning->second);

	- cout << "Warning: " << __warnings.at(warningId) << " ";
	- params.print(out);
	- out<<params;
	- }
	+ cout << "Warning: " << __warnings.at(warningId) << " ";
	+ params.print(out);
	+ out<<params;
	}
	+}

	- bool
	- ClaspLayer::handleSolution(Gringo::Model const &model) {
	- std::list<std::string> warnings;
	- cout << "Model: " << endl;
	-
	- const string& atomBindVar = Config::get("clasp.bindings.variable");
	- const string& atomBindFunc = Config::get("clasp.bindings.function");
	- const string& atomBindScope = Config::get("clasp.bindings.scope");
	+bool
	+ClaspLayer::handleSolution(Gringo::Model const &model) {
	+ std::list<std::string> warnings;
	+ cout << "Model: " << endl;

	- for (Gringo::Symbol atom : model.atoms(clingo_show_type_atoms)) {
	- atom.print(cout);
	- cout <<" \| "<< endl;
	+ const string& atomBindVar = Config::get("clasp.bindings.variable");
	+ const string& atomBindFunc = Config::get("clasp.bindings.function");
	+ const string& atomBindScope = Config::get("clasp.bindings.scope");

	- string atomName(atom.name().c_str());
	- if (atomName == atomBindVar \|\| atomName == atomBindFunc \|\| atomName == atomBindScope){
	- string name = std::get<1>(parse<Gringo::Symbol, Gringo::Symbol>(atom)).name().c_str();
	- __model.emplace(move(name), move(atom));
	- }
	+ for (Gringo::Symbol atom : model.atoms(clingo_show_type_atoms)) {
	+ atom.print(cout);
	+ cout <<" \| "<< endl;

	- __model.emplace(atomName, move(atom));
	+ string atomName(atom.name().c_str());
	+ if (atomName == atomBindVar \|\| atomName == atomBindFunc \|\| atomName == atomBindScope){
	+ string name = std::get<1>(parse<Gringo::Symbol, Gringo::Symbol>(atom)).name().c_str();
	+ __model.emplace(move(name), move(atom));
	}

	- return true;
	+ __model.emplace(atomName, move(atom));
	}

	- void
	- ClaspLayer::setCFAData(xreate::cfa::CFAGraph* graph) {
	- dataCFA.reset(graph);
	- }
	+ return true;
	+}

	- void
	- ClaspLayer::setDFAData(xreate::dfa::DFAGraph* graph){
	- dataDFA.reset(graph);
	- }
	+void
	+ClaspLayer::setCFAData(xreate::cfa::CFAGraph* graph) {
	+ dataCFA.reset(graph);
	+}

	- void
	- ClaspLayer::addRuleWarning(const RuleWarning &rule) {
	- //__partGeneral << rule << endl;
	-
	- list<string> domains;
	- boost::format formatDef("%1%(%2%)");
	- std::transform(rule.__args.begin(), rule.__args.end(), std::inserter(domains, domains.begin()),
	- [&formatDef](const std::pair<std::string, DomainAnnotation> &argument) {
	- string domain;
	- switch (argument.second) {
	- case DomainAnnotation::FUNCTION:
	- domain = "function";
	- break;
	- case DomainAnnotation::VARIABLE:
	- domain = "variable";
	- break;
	- }
	-
	- return boost::str(formatDef % domain % argument.first);
	- });
	-
	- list<string> vars;
	- std::transform(rule.__args.begin(), rule.__args.end(), std::inserter(vars, vars.begin()),
	- [](const std::pair<std::string, DomainAnnotation> &argument) {
	- return argument.first.c_str();
	- });
	-
	- list<list<string>> guardsRaw;
	- std::transform(rule.__guards.begin(), rule.__guards.end(), std::inserter(guardsRaw, guardsRaw.begin()),
	- [this](const Expression &guard) {
	- return xreate::analysis::compile(guard);
	- });
	-
	- const list<string>& guards = xreate::analysis::multiplyLists(std::move(guardsRaw));
	- list<string> &&branches = xreate::analysis::compileNeg(rule.__condition);
	-
	- boost::format formatWarning("warning(%1%, (%2%)):- %3%, %4%, %5%.");
	- for (const string &guardsJoined: guards)
	- for (const string &branch: branches) {
	- unsigned int hook = registerWarning(string(rule.__message));
	-
	- __partGeneral << formatWarning
	- %(hook)
	- %(boost::algorithm::join(vars, ", "))
	- %(branch)
	- %(guardsJoined)
	- %(boost::algorithm::join(domains, ", "))
	- <<endl;
	- }
	- }
	+void
	+ClaspLayer::setDFAData(xreate::dfa::DFAGraph* graph){
	+ dataDFA.reset(graph);
	+}

	+void
	+ClaspLayer::addRuleWarning(const RuleWarning &rule) {
	+ //__partGeneral << rule << endl;
	+
	+ list<string> domains;
	+ boost::format formatDef("%1%(%2%)");
	+ std::transform(rule.__args.begin(), rule.__args.end(), std::inserter(domains, domains.begin()),
	+ [&formatDef](const std::pair<std::string, DomainAnnotation> &argument) {
	+ string domain;
	+ switch (argument.second) {
	+ case DomainAnnotation::FUNCTION:
	+ domain = "function";
	+ break;
	+ case DomainAnnotation::VARIABLE:
	+ domain = "variable";
	+ break;
	+ }
	+
	+ return boost::str(formatDef % domain % argument.first);
	+ });
	+
	+ list<string> vars;
	+ std::transform(rule.__args.begin(), rule.__args.end(), std::inserter(vars, vars.begin()),
	+ [](const std::pair<std::string, DomainAnnotation> &argument) {
	+ return argument.first.c_str();
	+ });
	+
	+ list<list<string>> guardsRaw;
	+ std::transform(rule.__guards.begin(), rule.__guards.end(), std::inserter(guardsRaw, guardsRaw.begin()),
	+ [this](const Expression &guard) {
	+ return xreate::analysis::compile(guard);
	+ });
	+
	+ const list<string>& guards = xreate::analysis::multiplyLists(std::move(guardsRaw));
	+ list<string> &&branches = xreate::analysis::compileNeg(rule.__condition);
	+
	+ boost::format formatWarning("warning(%1%, (%2%)):- %3%, %4%, %5%.");
	+ for (const string &guardsJoined: guards)
	+ for (const string &branch: branches) {
	+ unsigned int hook = registerWarning(string(rule.__message));
	+
	+ __partGeneral << formatWarning
	+ %(hook)
	+ %(boost::algorithm::join(vars, ", "))
	+ %(branch)
	+ %(guardsJoined)
	+ %(boost::algorithm::join(domains, ", "))
	+ <<endl;
	+ }
	+}


	- unsigned int
	- ClaspLayer::registerWarning(std::string &&message) {
	- static int warningId = 0;
	- __warnings.emplace(warningId, message);
	- return warningId++;;
	- }

	- void
	- ClaspLayer::involveImports() {
	- ostream &out = __partGeneral;
	+unsigned int
	+ClaspLayer::registerWarning(std::string &&message) {
	+ static int warningId = 0;
	+ __warnings.emplace(warningId, message);
	+ return warningId++;;
	+}

	- for (string fn: ast->__rawImports)
	- {
	- std::ifstream file(fn);
	- if (!file) continue;
	+void
	+ClaspLayer::involveImports() {
	+ ostream &out = __partGeneral;

	- while(!file.eof()){
	- string line;
	- std::getline(file, line);
	- out << line << endl;
	- }
	+ for (string fn: ast->__rawImports)
	+ {
	+ std::ifstream file(fn);
	+ if (!file) continue;
	+
	+ while(!file.eof()){
	+ string line;
	+ std::getline(file, line);
	+ out << line << endl;
	}
	}
	+}

	- void
	- ClaspLayer::addRawScript(std::string&& script){
	- __partGeneral << script;
	- }
	+void
	+ClaspLayer::addRawScript(std::string&& script){
	+ __partGeneral << script;
	+}

	- void
	- ClaspLayer::run() {
	- involveImports();
	+void
	+ClaspLayer::run() {
	+ involveImports();

	- if (this->dataDFA){
	- this->dataDFA->print(__partGeneral);
	- }
	+ if (this->dataDFA){
	+ this->dataDFA->print(__partGeneral);
	+ }

	- if (this->dataCFA){
	- this->dataCFA->print(__partGeneral);
	- }
	+ if (this->dataCFA){
	+ this->dataCFA->print(__partGeneral);
	+ }

	- dominators::DominatorsTreeAnalysisProvider providerDominators;
	- providerDominators.run(this);
	- providerDominators.print(__partGeneral);
	+ dominators::DominatorsTreeAnalysisProvider providerDominators;
	+ providerDominators.run(this);
	+ providerDominators.print(__partGeneral);

	- ostringstream program;
	- program << __partTags.str() << __partGeneral.str();
	- cout << FYEL(program.str()) << endl;
	+ ostringstream program;
	+ program << __partTags.str() << __partGeneral.str();
	+ cout << FYEL(program.str()) << endl;

	- std::vector<char const *> args{"clingo", nullptr};
	- DefaultGringoModule moduleDefault;
	- Gringo::Scripts scriptsDefault(moduleDefault);
	- ClingoLib ctl(scriptsDefault, 0, args.data(), {}, 0);
	+ std::vector<char const *> args{"clingo", nullptr};
	+ DefaultGringoModule moduleDefault;
	+ Gringo::Scripts scriptsDefault(moduleDefault);
	+ ClingoLib ctl(scriptsDefault, 0, args.data(), {}, 0);

	- ctl.add("base", {}, program.str());
	- ctl.ground({{"base", {}}}, nullptr);
	+ ctl.add("base", {}, program.str());
	+ ctl.ground({{"base", {}}}, nullptr);

	// solve
	- Gringo::SolveResult result = ctl.solve([this](Gringo::Model const &model) {
	- this->handleSolution(model);
	- return true;
	- }, {});
	-
	- if (result.satisfiable() == Gringo::SolveResult::Satisfiable) {
	- cout << FGRN("SUCCESSFULLY") << endl;
	- } else {
	- cout << FRED("UNSUCCESSFULLY") << endl;
	- }
	+ Gringo::SolveResult result = ctl.solve([this](Gringo::Model const &model) {
	+ this->handleSolution(model);
	+ return true;
	+ }, {});

	-// invoke all query plugins to process clasp data
	- for (auto q: __queries)
	- {
	- q.second->init(this);
	- }
	+ if (result.satisfiable() == Gringo::SolveResult::Satisfiable) {
	+ cout << FGRN("SUCCESSFULLY") << endl;
	+ } else {
	+ cout << FRED("UNSUCCESSFULLY") << endl;
	}

	- ClaspLayer::ClaspLayer() {
	+// invoke all query plugins to process clasp data
	+ for (auto q: __queries)
	+ {
	+ q.second->init(this);
	}
	+}

	- ClaspLayer::ModelFragment
	- ClaspLayer::query(const std::string& atom)
	- {
	- if (! __model.count(atom)){
	- return boost::none;
	- }
	+ClaspLayer::ClaspLayer() {
	+}

	- return ModelFragment(__model.equal_range(atom));
	+ClaspLayer::ModelFragment
	+ClaspLayer::query(const std::string& atom)
	+{
	+ if (! __model.count(atom)){
	+ return boost::none;
	}

	- ScopePacked
	- ClaspLayer::pack(CodeScope* const scope) {
	- auto pos = __indexScopes.emplace(scope, __indexScopes.size());
	- if (pos.second)
	- __registryScopes.push_back(scope);
	+ return ModelFragment(__model.equal_range(atom));
	+}

	- return pos.first->second;
	- }
	+ScopePacked
	+ClaspLayer::pack(CodeScope* const scope) {
	+ auto pos = __indexScopes.emplace(scope, __indexScopes.size());
	+ if (pos.second)
	+ __registryScopes.push_back(scope);

	- size_t
	- ClaspLayer::getScopesCount() const{
	- return __registryScopes.size();
	- }
	+ return pos.first->second;
	+}

	- SymbolPacked
	- ClaspLayer::pack(const Symbol& symbol, std::string hintSymbolName)
	- {
	- SymbolPacked result(symbol.identifier.id, symbol.identifier.version, pack(symbol.scope));
	- __indexSymbolNameHints.emplace(result, hintSymbolName);
	+size_t
	+ClaspLayer::getScopesCount() const{
	+ return __registryScopes.size();
	+}
	+
	+SymbolPacked
	+ClaspLayer::pack(const Symbol& symbol, std::string hintSymbolName)
	+{
	+ SymbolPacked result(symbol.identifier.id, symbol.identifier.version, pack(symbol.scope));
	+ __indexSymbolNameHints.emplace(result, hintSymbolName);
	+
	+ return result;
	+}
	+
	+Symbol
	+ClaspLayer::unpack(const SymbolPacked& symbol)
	+{
	+ return Symbol{ScopedSymbol{symbol.identifier, symbol.version}, __registryScopes[symbol.scope]};
	+};

	- return result;
	+std::string
	+ClaspLayer::getHintForPackedSymbol(const SymbolPacked& symbol){
	+ if (!symbol.categoryTransient) {
	+ auto result = __indexSymbolNameHints.find(symbol);
	+ return (result == __indexSymbolNameHints.end())? "" : result->second;
	+
	+ } else {
	+ return "anonym(" + to_string(symbol.identifier) + ")";
	}
	+}

	- Symbol
	- ClaspLayer::unpack(const SymbolPacked& symbol)
	- {
	- return Symbol{ScopedSymbol{symbol.identifier, symbol.version}, __registryScopes[symbol.scope]};
	- };
	+bool operator==(const SymbolPacked& s1, const SymbolPacked& s2)
	+{
	+ return s1.identifier == s2.identifier && s1.scope == s2.scope;
	+}
	+
	+bool operator<(const SymbolPacked& s1, const SymbolPacked& s2)
	+{
	+ return s1.scope < s2.scope \|\| (s1.scope == s2.scope && s1.identifier < s2.identifier);
	+}
	+
	+IQuery*
	+ClaspLayer::registerQuery(IQuery *query, const QueryId& id) {
	+ return __queries.emplace(id, query).first->second;
	+}
	+
	+IQuery*
	+ClaspLayer::getQuery(const QueryId& id){
	+ assert(__queries.count(id) && "Undefined query");
	+ return __queries.at(id);
	+}

	- std::string
	- ClaspLayer::getHintForPackedSymbol(const SymbolPacked& symbol){
	- if (!symbol.categoryTransient) {
	- auto result = __indexSymbolNameHints.find(symbol);
	- return (result == __indexSymbolNameHints.end())? "" : result->second;
	+Expression
	+ParseImplAtom<Expression>::get(const Gringo::Symbol& atom) {
	+ switch (atom.type()) {
	+ case Gringo::SymbolType::Num: return Expression(atom.num());
	+ case Gringo::SymbolType::Str: return Expression(Atom<String_t>(std::string(atom.string().c_str())));

	- } else {
	- return "anonym(" + to_string(symbol.identifier) + ")";
	+ case Gringo::SymbolType::Fun:
	+ {
	+ //FUNC
	+ Expression result(Operator::CALL,{Expression(Atom<Identifier_t>(std::string(atom.name().c_str())))});
	+ for (const Gringo::Symbol& arg : atom.args()) {
	+ result.addArg(ParseImplAtom<Expression>::get(arg));
	+ }
	+
	+ return result;
	}
	- }

	- bool operator==(const SymbolPacked& s1, const SymbolPacked& s2)
	- {
	- return s1.identifier == s2.identifier && s1.scope == s2.scope;
	+ default:
	+ {
	+ assert(false);
	+ }
	}
	+}

	- bool operator<(const SymbolPacked& s1, const SymbolPacked& s2)
	- {
	- return s1.scope < s2.scope \|\| (s1.scope == s2.scope && s1.identifier < s2.identifier);
	- }
	+std::string
	+ParseImplAtom<std::string>::get(const Gringo::Symbol& atom) {
	+ switch (atom.type()) {
	+ case Gringo::SymbolType::Str: return atom.string().c_str();
	+ case Gringo::SymbolType::Fun: return atom.name().c_str();

	- IQuery*
	- ClaspLayer::registerQuery(IQuery *query, const QueryId& id) {
	- return __queries.emplace(id, query).first->second;
	+ default: break;
	}

	- IQuery*
	- ClaspLayer::getQuery(const QueryId& id){
	- assert(__queries.count(id) && "Undefined query");
	- return __queries.at(id);
	+ assert(false && "Inappropriate symbol type");
	+}
	+
	+SymbolPacked
	+ParseImplAtom<SymbolPacked>::get(const Gringo::Symbol& atom) {
	+ auto result = ClaspLayer::parse<unsigned int, unsigned int, unsigned int>(atom);
	+ return SymbolPacked(std::get<0>(result), std::get<1>(result), std::get<2>(result));
	+};
	+
	+Gringo::Symbol
	+ParseImplAtom<Gringo::Symbol>::get(const Gringo::Symbol& atom) {
	+ return atom;
	+}
	+
	+std::list<Gringo::Symbol>
	+ParseImplAtom<std::list<Gringo::Symbol>>::get(const Gringo::Symbol& atom){
	+ assert (atom.type() == Gringo::SymbolType::Fun);
	+ std::list<Gringo::Symbol> result;
	+
	+ for (const Gringo::Symbol& arg: atom.args()) {
	+ result.push_back(ParseImplAtom<Gringo::Symbol>::get(arg));
	}
	+
	+ return result;
	}
	+
	+} //end of xreate namespace
	diff --git a/cpp/src/clasplayer.h b/cpp/src/clasplayer.h
	index cbced8e..d4ae821 100644
	--- a/cpp/src/clasplayer.h
	+++ b/cpp/src/clasplayer.h
	@@ -1,253 +1,204 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* Author: pgess <v.melnychenko@xreate.org>
	* File: clasplayer.h
	*/

	#ifndef CLASPLAYER_H
	#define CLASPLAYER_H

	#include "ast.h"
	#include "contextrule.h"

	#include <clingo/clingocontrol.hh>
	#include <string>
	#include <climits>
	#include <boost/bimap.hpp>
	#include <boost/bimap/multiset_of.hpp>
	#include <boost/optional.hpp>
	#include <boost/scoped_ptr.hpp>
	#include <list>

	namespace xreate {

	- typedef unsigned int ScopePacked;
	-
	- struct SymbolPacked {
	- VNameId identifier;
	- versions::VariableVersion version;
	- ScopePacked scope;
	- bool categoryTransient;
	-
	- SymbolPacked(): categoryTransient(false){}
	- SymbolPacked(ScopedSymbol i, ScopePacked s, bool isTransient = false): identifier(i.id), version(i.version), scope(s), categoryTransient(isTransient){}
	- SymbolPacked(VNameId symbolId, versions::VariableVersion symbolVersion, ScopePacked symbolScope, bool isTransient = false)
	- : identifier(symbolId), version(symbolVersion), scope(symbolScope), categoryTransient(isTransient){}
	- };
	-
	- bool operator==(const SymbolPacked& s1, const SymbolPacked& s2);
	- bool operator<(const SymbolPacked& s1, const SymbolPacked& s2);
	-
	- enum class DFGConnection {
	- STRONG, WEAK, PROTOTYPE
	- };
	-
	- class IAnalysisData {
	- public:
	- void print(std::ostringstream& output) const;
	- virtual ~IAnalysisData(){};
	- };
	-
	- class IQuery {
	- public:
	- virtual void init(ClaspLayer* clasp) = 0;
	- virtual ~IQuery() {}
	- };
	-
	- enum class QueryId {
	- ContainersQuery,
	- ContextQuery,
	- PtrvalidQuery
	- };
	-
	- namespace dfa{
	- class DFAGraph;
	+typedef unsigned int ScopePacked;
	+
	+struct SymbolPacked {
	+ VNameId identifier;
	+ versions::VariableVersion version;
	+ ScopePacked scope;
	+ bool categoryTransient;
	+
	+ SymbolPacked(): categoryTransient(false){}
	+ SymbolPacked(ScopedSymbol i, ScopePacked s, bool isTransient = false): identifier(i.id), version(i.version), scope(s), categoryTransient(isTransient){}
	+ SymbolPacked(VNameId symbolId, versions::VariableVersion symbolVersion, ScopePacked symbolScope, bool isTransient = false)
	+ : identifier(symbolId), version(symbolVersion), scope(symbolScope), categoryTransient(isTransient){}
	+};
	+
	+bool operator==(const SymbolPacked& s1, const SymbolPacked& s2);
	+bool operator<(const SymbolPacked& s1, const SymbolPacked& s2);
	+
	+enum class DFGConnection {
	+ STRONG, WEAK, PROTOTYPE
	+};
	+
	+class IAnalysisData {
	+public:
	+ void print(std::ostringstream& output) const;
	+ virtual ~IAnalysisData(){};
	+};
	+
	+class IQuery {
	+public:
	+ virtual void init(ClaspLayer* clasp) = 0;
	+ virtual ~IQuery() {}
	+};
	+
	+enum class QueryId {
	+ ContainersQuery,
	+ ContextQuery,
	+ PtrvalidQuery
	+};
	+
	+namespace dfa{
	+ class DFAGraph;
	+}
	+
	+namespace cfa {
	+ class CFAGraph;
	+}
	+
	+class ClaspLayer {
	+ friend class ContextRule;
	+
	+ //PROVIDERS:
	+public:
	+ boost::scoped_ptr<xreate::dfa::DFAGraph> dataDFA;
	+ void setDFAData(xreate::dfa::DFAGraph* graph);
	+
	+ boost::scoped_ptr<xreate::cfa::CFAGraph> dataCFA;
	+ void setCFAData(xreate::cfa::CFAGraph* graph);
	+
	+ void addRawScript(std::string&& script);
	+
	+private:
	+ void involveImports();
	+
	+ //QUERIES
	+public:
	+ IQuery* registerQuery(IQuery* query, const QueryId& id);
	+ IQuery* getQuery(const QueryId& id);
	+
	+ template<class ...Types>
	+ static std::tuple<Types...> parse(const Gringo::Symbol& atom);
	+
	+ typedef std::multimap<std::string, Gringo::Symbol>::const_iterator ModelIterator;
	+ typedef boost::optional<std::pair<ClaspLayer::ModelIterator, ClaspLayer::ModelIterator>> ModelFragment;
	+ ModelFragment query(const std::string& atom);
	+
	+ size_t getScopesCount() const;
	+ SymbolPacked pack(const Symbol& symbol, std::string hintSymbolName = "");
	+ ScopePacked pack(CodeScope * const scope);
	+ Symbol unpack(const SymbolPacked& symbol);
	+ std::string getHintForPackedSymbol(const SymbolPacked& symbol);
	+
	+private:
	+ std::map<QueryId, IQuery*> __queries;
	+ std::multimap<std::string, Gringo::Symbol> __model;
	+ std::map<SymbolPacked, std::string> __indexSymbolNameHints;
	+ std::unordered_map<const CodeScope*, unsigned int> __indexScopes;
	+ std::vector<CodeScope*> __registryScopes;
	+
	+ //WARNINGS
	+ //TODO move to separate provider/query
	+public:
	+ void addRuleWarning(const RuleWarning &rule);
	+ unsigned int registerWarning(std::string &&message);
	+
	+private:
	+ std::map<unsigned int, std::string> __warnings;
	+ void printWarnings(std::ostream& out);
	+
	+ //DEFAULT
	+public:
	+ AST *ast;
	+
	+ ClaspLayer();
	+ void run();
	+
	+private:
	+ std::ostringstream __partTags;
	+ std::ostringstream __partGeneral;
	+
	+ bool handleSolution(Gringo::Model const &model);
	+};
	+
	+template<class typ>
	+struct ParseImplAtom {
	+
	+ static typ get(const Gringo::Symbol& atom) {
	+ return atom.num();
	}
	-
	- namespace cfa {
	- class CFAGraph;
	+};
	+
	+template<>
	+struct ParseImplAtom<std::string> {
	+ static std::string get(const Gringo::Symbol& atom);
	+};
	+
	+template<>
	+struct ParseImplAtom<SymbolPacked> {
	+ static SymbolPacked get(const Gringo::Symbol& atom);
	+};
	+
	+template<>
	+struct ParseImplAtom<Gringo::Symbol> {
	+ static Gringo::Symbol get(const Gringo::Symbol& atom);
	+};
	+
	+template<>
	+struct ParseImplAtom<std::list<Gringo::Symbol>>{
	+ static std::list<Gringo::Symbol> get(const Gringo::Symbol& atom);
	+};
	+
	+template<>
	+struct ParseImplAtom<Expression> {
	+ static Expression get(const Gringo::Symbol& atom);
	+};
	+
	+template<class Tuple, size_t index>
	+struct Parse_Impl {
	+
	+ static void parse(Tuple& tup, Gringo::SymSpan::iterator arg) {
	+ const size_t tupleSize = std::tuple_size<Tuple>::value;
	+ typedef typename std::tuple_element < tupleSize - index, Tuple>::type ElType;
	+
	+ ElType& el = std::get < tupleSize - index > (tup);
	+
	+ Gringo::Symbol atom = *arg;
	+ el = ParseImplAtom<ElType>::get(atom);
	+
	+ Parse_Impl<Tuple, index - 1 > ::parse(tup, ++arg);
	}
	-
	- class ClaspLayer {
	- friend class ContextRule;
	-
	- //PROVIDERS:
	- public:
	- boost::scoped_ptr<xreate::dfa::DFAGraph> dataDFA;
	- void setDFAData(xreate::dfa::DFAGraph* graph);
	-
	- boost::scoped_ptr<xreate::cfa::CFAGraph> dataCFA;
	- void setCFAData(xreate::cfa::CFAGraph* graph);
	-
	- void addRawScript(std::string&& script);
	-
	- private:
	- void involveImports();
	-
	- //QUERIES
	- public:
	- IQuery* registerQuery(IQuery* query, const QueryId& id);
	- IQuery* getQuery(const QueryId& id);
	-
	- template<class ...Types>
	- static std::tuple<Types...> parse(const Gringo::Symbol& atom);
	-
	- typedef std::multimap<std::string, Gringo::Symbol>::const_iterator ModelIterator;
	- typedef boost::optional<std::pair<ClaspLayer::ModelIterator, ClaspLayer::ModelIterator>> ModelFragment;
	- ModelFragment query(const std::string& atom);
	-
	- size_t getScopesCount() const;
	- SymbolPacked pack(const Symbol& symbol, std::string hintSymbolName = "");
	- ScopePacked pack(CodeScope * const scope);
	- Symbol unpack(const SymbolPacked& symbol);
	- std::string getHintForPackedSymbol(const SymbolPacked& symbol);
	-
	- private:
	- std::map<QueryId, IQuery*> __queries;
	- std::multimap<std::string, Gringo::Symbol> __model;
	- std::map<SymbolPacked, std::string> __indexSymbolNameHints;
	- std::unordered_map<const CodeScope*, unsigned int> __indexScopes;
	- std::vector<CodeScope*> __registryScopes;
	-
	- //WARNINGS
	- //TODO move to separate provider/query
	- public:
	- void addRuleWarning(const RuleWarning &rule);
	- unsigned int registerWarning(std::string &&message);
	-
	- private:
	- std::map<unsigned int, std::string> __warnings;
	- void printWarnings(std::ostream& out);
	-
	- //DEFAULT
	- public:
	- AST *ast;
	-
	- ClaspLayer();
	- void run();
	-
	- private:
	- std::ostringstream __partTags;
	- std::ostringstream __partGeneral;
	-
	- bool handleSolution(Gringo::Model const &model);
	- };
	-
	- template<class typ>
	- struct ParseImplAtom {
	-
	- static typ get(const Gringo::Symbol& atom) {
	- return atom.num();
	- }
	- };
	-
	- template<>
	- struct ParseImplAtom<std::string> {
	- static std::string get(const Gringo::Symbol& atom) {
	- switch (atom.type()) {
	- case Gringo::SymbolType::Str: return atom.string().c_str();
	- case Gringo::SymbolType::Fun: return atom.name().c_str();
	-
	- default: break;
	- }
	-
	- assert(false && "Inappropriate symbol type");
	- }
	- };
	-
	- template<>
	- struct ParseImplAtom<SymbolPacked> {
	-
	- static SymbolPacked get(const Gringo::Symbol& atom) {
	- auto result = ClaspLayer::parse<unsigned int, unsigned int, unsigned int>(atom);
	- return SymbolPacked(std::get<0>(result), std::get<1>(result), std::get<2>(result));
	- }
	- };
	-
	- template<>
	- struct ParseImplAtom<Gringo::Symbol> {
	-
	- static Gringo::Symbol get(const Gringo::Symbol& atom) {
	- return atom;
	- }
	- };
	-
	- template<>
	- struct ParseImplAtom<std::list<Gringo::Symbol>>{
	- static std::list<Gringo::Symbol> get(const Gringo::Symbol& atom) {
	- assert (atom.type() == Gringo::SymbolType::Fun);
	- std::list<Gringo::Symbol> result;
	-
	- for (const Gringo::Symbol& arg: atom.args()) {
	- result.push_back(ParseImplAtom<Gringo::Symbol>::get(arg));
	- }
	-
	- return result;
	- }
	- };
	-
	- template<>
	- struct ParseImplAtom<Expression> {
	-
	- static Expression get(const Gringo::Symbol& atom) {
	- switch (atom.type()) {
	- case Gringo::SymbolType::Num: return Expression(atom.num());
	- case Gringo::SymbolType::Str: return Expression(std::string(atom.string().c_str()));
	-
	- case Gringo::SymbolType::Fun:
	- {
	- //FUNC
	- Expression result(Operator::CALL,{Expression(std::string(atom.name().c_str()))});
	- for (const Gringo::Symbol& arg : atom.args()) {
	- result.addArg(ParseImplAtom<Expression>::get(arg));
	- }
	-
	- return result;
	- }
	-
	- default:
	- {
	- assert(false);
	- }
	- }
	- }
	- };
	-
	- template<class Tuple, size_t index>
	- struct Parse_Impl {
	-
	- static void parse(Tuple& tup, Gringo::SymSpan::iterator arg) {
	- const size_t tupleSize = std::tuple_size<Tuple>::value;
	- typedef typename std::tuple_element < tupleSize - index, Tuple>::type ElType;
	-
	- ElType& el = std::get < tupleSize - index > (tup);
	-
	- Gringo::Symbol atom = *arg;
	- el = ParseImplAtom<ElType>::get(atom);
	-
	- Parse_Impl<Tuple, index - 1 > ::parse(tup, ++arg);
	- }
	- };
	-
	- template<class Tuple>
	- struct Parse_Impl<Tuple, 0> {
	-
	- static void parse(Tuple& tup, Gringo::SymSpan::iterator arg) {
	- }
	- };
	+};

	- template<class ...Types>
	- std::tuple<Types...>
	- ClaspLayer::parse(const Gringo::Symbol& atom) {
	- typedef std::tuple < Types...> Tuple;
	- Tuple tup;
	- Parse_Impl<Tuple, std::tuple_size<Tuple>::value>::parse(tup, atom.args().first);
	+template<class Tuple>
	+struct Parse_Impl<Tuple, 0> {

	- return tup;
	+ static void parse(Tuple& tup, Gringo::SymSpan::iterator arg) {
	}
	+};

	+template<class ...Types>
	+std::tuple<Types...>
	+ClaspLayer::parse(const Gringo::Symbol& atom) {
	+ typedef std::tuple < Types...> Tuple;
	+ Tuple tup;
	+ Parse_Impl<Tuple, std::tuple_size<Tuple>::value>::parse(tup, atom.args().first);

	+ return tup;
	}
	+} //end of xreate namespace
	#endif
	diff --git a/cpp/src/compilation/advanced.cpp b/cpp/src/compilation/advanced.cpp
	index 85490f4..673d7e8 100644
	--- a/cpp/src/compilation/advanced.cpp
	+++ b/cpp/src/compilation/advanced.cpp
	@@ -1,404 +1,403 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* File: InstructionsAdvanced.cpp
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on June 26, 2016, 6:00 PM
	*/

	//#include <compilation/transformations.h>
	#include "compilation/advanced.h"
	#include "compilation/containers.h"
	#include "compilation/transformersaturation.h"

	#include "query/context.h"
	#include "query/containers.h"
	#include "llvmlayer.h"
	#include "ast.h"

	using namespace std;
	using namespace llvm;
	using namespace xreate;
	using namespace xreate::containers;
	using namespace xreate::compilation;

	#define NAME(x) (hintRetVar.empty()? x : hintRetVar)
	#define UNUSED(x) (void)(x)
	#define EXPAND_CONTEXT \
	LLVMLayer* llvm = context.pass->man->llvm; \
	compilation::ICodeScopeUnit* scope = context.scope; \
	compilation::IFunctionUnit* function = context.function;

	Advanced::Advanced(compilation::Context ctx)
	: context(ctx), tyNum(static_cast<llvm::IntegerType*> (ctx.pass->man->llvm->toLLVMType(ExpandedType(TypeAnnotation(TypePrimitive::Num))))) {
	}

	llvm::Value*
	Advanced::compileMapSolidOutput(const Expression &expr, const std::string hintRetVar) {
	EXPAND_CONTEXT
	UNUSED(scope);

	//initialization
	Symbol symbolIn = Attachments::get<Symbol>(expr.getOperands()[0]);

	ImplementationRec<SOLID> implIn = containers::Query::queryImplementation(symbolIn).extract<SOLID>(); // impl of input list
	size_t size = implIn.size;
	CodeScope* scopeLoop = expr.blocks.front();
	std::string varEl = scopeLoop->__bindings[0];

	Iterator* it = Iterator::create(context, symbolIn);
	llvm::Value *rangeFrom = it->begin();
	llvm::Value *rangeTo = it->end();

	//definitions
	ArrayType* tyNumArray = (ArrayType*) (llvm->toLLVMType(ExpandedType(TypeAnnotation(tag_array, TypePrimitive::Num, size))));
	llvm::IRBuilder<> &builder = llvm->builder;

	llvm::BasicBlock *blockLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "loop", function->raw);
	llvm::BasicBlock *blockBeforeLoop = builder.GetInsertBlock();
	llvm::BasicBlock *blockAfterLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "postloop", function->raw);
	Value* dataOut = llvm->builder.CreateAlloca(tyNumArray, ConstantInt::get(tyNum, size), NAME("map"));

	// * initial check
	Value* condBefore = builder.CreateICmpSLE(rangeFrom, rangeTo);
	builder.CreateCondBr(condBefore, blockLoop, blockAfterLoop);

	// create PHI:
	builder.SetInsertPoint(blockLoop);
	llvm::PHINode *stateLoop = builder.CreatePHI(tyNum, 2, "mapIt");
	stateLoop->addIncoming(rangeFrom, blockBeforeLoop);

	// loop body:
	Value* elIn = it->get(stateLoop, varEl);
	compilation::ICodeScopeUnit* scopeLoopUnit = function->getScopeUnit(scopeLoop);
	scopeLoopUnit->bindArg(elIn, move(varEl));
	Value* elOut = scopeLoopUnit->compile();
	Value pElOut = builder.CreateGEP(dataOut, ArrayRef<Value >(std::vector<Value*>{ConstantInt::get(tyNum, 0), stateLoop}));
	builder.CreateStore(elOut, pElOut);

	//next iteration preparing
	Value *stateLoopNext = builder.CreateAdd(stateLoop, llvm::ConstantInt::get(tyNum, 1));
	stateLoop->addIncoming(stateLoopNext, builder.GetInsertBlock());

	//next iteration checks:
	Value* condAfter = builder.CreateICmpSLE(stateLoopNext, rangeTo);
	builder.CreateCondBr(condAfter, blockLoop, blockAfterLoop);

	//finalization:
	builder.SetInsertPoint(blockAfterLoop);

	return dataOut;
	}

	Value*
	Advanced::compileArrayIndex(llvm::Value* aggregate, std::vector<llvm::Value *> indexes, std::string hintRetVar) {
	EXPAND_CONTEXT
	UNUSED(function);
	UNUSED(scope);

	indexes.insert(indexes.begin(), llvm::ConstantInt::get(tyNum, 0));
	llvm::Value pEl = llvm->builder.CreateGEP(aggregate, llvm::ArrayRef<llvm::Value >(indexes));
	return llvm->builder.CreateLoad(pEl, NAME("el"));
	}

	Value*
	Advanced::compileStructIndex(llvm::Value* aggregate, const ExpandedType& t, const std::string& idx) {
	EXPAND_CONTEXT
	UNUSED(scope);
	UNUSED(function);
	TypeUtils types(llvm);
	std::vector<std::string>&& fields = types.getStructFields(t);

	for (unsigned i = 0, size = fields.size(); i < size; ++i) {
	if (fields.at(i) == idx) {


	//TODO DISABLEDFEATURE validptr
	// TODO review safety check: validPtr for `aggregate`
	// SECTIONTAG validptr exception
	// std::vector<llvm::Value*> refs;
	// llvm::BasicBlock *blockSafe = llvm::BasicBlock::Create(llvm::getGlobalContext(), "safe", function->raw);
	// PointerType* tyAggr = dyn_cast<PointerType>(aggregate->getType());
	// llvm::Value* null = llvm::ConstantPointerNull::get(tyAggr);
	// Value* condNull = llvm->builder.CreateICmpNE(aggregate, null);
	//
	// llvm::BasicBlock *blockException = llvm::BasicBlock::Create(llvm::getGlobalContext(), "exception", function->raw);
	// llvm->builder.CreateCondBr(condNull, blockSafe, blockException);
	// llvm->initExceptionBlock(blockException);
	//
	// llvm->builder.SetInsertPoint(blockSafe);

	//dereference pointer
	if (types.isPointer(t)) {
	llvm::Value* addr = llvm->builder.CreateConstGEP2_32(nullptr, aggregate, 0, i);
	return llvm->builder.CreateLoad(addr);
	}

	- aggregate->getType()->dump();
	return llvm->builder.CreateExtractValue(aggregate, llvm::ArrayRef<unsigned>{i});
	}
	}

	assert(false && "not found required struct field");
	return nullptr;
	}

	llvm::Value*
	Advanced::compileFold(const Expression& fold, const std::string& hintRetVar) {
	EXPAND_CONTEXT
	assert(fold.op == Operator::FOLD);

	//initialization:
	Symbol varInSymbol = Attachments::get<Symbol>(fold.getOperands()[0]);
	Implementation info = Query::queryImplementation(varInSymbol);

	Iterator* it = Iterator::create(context, varInSymbol);
	llvm::Value* rangeBegin = it->begin();
	llvm::Value* rangeEnd = it->end();
	llvm::Value* accumInit = scope->process(fold.getOperands()[1]);
	std::string varIn = fold.getOperands()[0].getValueString();
	std::string varAccum = fold.bindings[1];
	std::string varEl = fold.bindings[0];

	llvm::BasicBlock *blockBeforeLoop = llvm->builder.GetInsertBlock();
	std::unique_ptr<TransformerSaturation> transformerSaturation(new TransformerSaturation(blockBeforeLoop, context.pass->managerTransformations));


	llvm::BasicBlock *blockLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "fold", function->raw);
	llvm::BasicBlock *blockLoopBody = llvm::BasicBlock::Create(llvm::getGlobalContext(), "fold_body", function->raw);
	llvm::BasicBlock *blockAfterLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "fold_after", function->raw);
	llvm::BasicBlock *blockNext = llvm::BasicBlock::Create(llvm::getGlobalContext(), "fold_next", function->raw);

	llvm->builder.CreateBr(blockLoop);

	// * create phi
	llvm->builder.SetInsertPoint(blockLoop);
	llvm::PHINode *accum = llvm->builder.CreatePHI(accumInit->getType(), 2, varAccum);
	accum->addIncoming(accumInit, blockBeforeLoop);
	llvm::PHINode *itLoop = llvm->builder.CreatePHI(rangeBegin->getType(), 2, "foldIt");
	itLoop->addIncoming(rangeBegin, blockBeforeLoop);

	// * loop checks
	Value* condRange = llvm->builder.CreateICmpNE(itLoop, rangeEnd);
	llvm->builder.CreateCondBr(condRange, blockLoopBody, blockAfterLoop);

	// * loop body
	llvm->builder.SetInsertPoint(blockLoopBody);
	CodeScope* scopeLoop = fold.blocks.front();
	compilation::ICodeScopeUnit* loopUnit = function->getScopeUnit(scopeLoop);
	Value* elIn = it->get(itLoop);
	loopUnit->bindArg(accum, move(varAccum));
	loopUnit->bindArg(elIn, move(varEl));
	Value* accumNext = loopUnit->compile();

	// * Loop saturation checks
	bool flagSaturationTriggered = transformerSaturation->insertSaturationChecks(blockNext, blockAfterLoop, context);
	llvm::BasicBlock* blockSaturation = llvm->builder.GetInsertBlock();
	if (!flagSaturationTriggered){
	llvm->builder.CreateBr(blockNext);
	}

	// * computing next iteration state
	llvm->builder.SetInsertPoint(blockNext);
	Value *itLoopNext = it->advance(itLoop);
	accum->addIncoming(accumNext, llvm->builder.GetInsertBlock());
	itLoop->addIncoming(itLoopNext, llvm->builder.GetInsertBlock());
	llvm->builder.CreateBr(blockLoop);

	// * finalization:
	llvm->builder.SetInsertPoint(blockAfterLoop);
	if (!flagSaturationTriggered){
	return accum;
	}

	llvm::PHINode* result = llvm->builder.CreatePHI(accumInit->getType(), 2);
	result->addIncoming(accum, blockLoop);
	result->addIncoming(accumNext, blockSaturation);
	return result;
	}

	llvm::Value*
	Advanced::compileFoldInf(const Expression& fold, const std::string& hintRetVar) {
	EXPAND_CONTEXT
	assert(fold.op == Operator::FOLD_INF);

	std::string accumName = fold.bindings[0];
	llvm::Value* accumInit = scope->process(fold.getOperands()[0]);

	llvm::BasicBlock *blockBeforeLoop = llvm->builder.GetInsertBlock();
	llvm::BasicBlock *blockLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "foldinf", function->raw);
	llvm::BasicBlock *blockNext = llvm::BasicBlock::Create(llvm::getGlobalContext(), "foldinf_next", function->raw);
	llvm::BasicBlock *blockAfterLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(), "foldinf_post", function->raw);
	std::unique_ptr<TransformerSaturation> transformerSaturation(new TransformerSaturation(blockBeforeLoop, context.pass->managerTransformations));

	llvm->builder.CreateBr(blockLoop);

	// * create phi
	llvm->builder.SetInsertPoint(blockLoop);
	llvm::PHINode *accum = llvm->builder.CreatePHI(accumInit->getType(), 2, accumName);
	accum->addIncoming(accumInit, blockBeforeLoop);

	// * loop body
	CodeScope* scopeLoop = fold.blocks.front();
	compilation::ICodeScopeUnit* unitLoop = function->getScopeUnit(scopeLoop);
	unitLoop->bindArg(accum, move(accumName));
	Value* accumNext = unitLoop->compile();

	// * Loop saturation checks
	bool flagSaturationTriggered = transformerSaturation->insertSaturationChecks(blockNext, blockAfterLoop, context);
	assert(flagSaturationTriggered);

	// * computing next iteration state
	llvm->builder.SetInsertPoint(blockNext);
	accum->addIncoming(accumNext, llvm->builder.GetInsertBlock());
	llvm->builder.CreateBr(blockLoop);

	// finalization:
	llvm->builder.SetInsertPoint(blockAfterLoop);
	return accumNext;
	}

	llvm::Value*
	Advanced::compileIf(const Expression& exprIf, const std::string& hintRetVar) {
	EXPAND_CONTEXT

	//initialization:
	const Expression& condExpr = exprIf.getOperands()[0];
	llvm::IRBuilder<>& builder = llvm->builder;
	//llvm::Type* tyResultType = llvm->toLLVMType(llvm->ast->expandType(exprIf.type));

	llvm::BasicBlock *blockAfter = llvm::BasicBlock::Create(llvm::getGlobalContext(), "ifAfter", function->raw);
	llvm::BasicBlock *blockTrue = llvm::BasicBlock::Create(llvm::getGlobalContext(), "ifTrue", function->raw);
	llvm::BasicBlock *blockFalse = llvm::BasicBlock::Create(llvm::getGlobalContext(), "ifFalse", function->raw);

	llvm::Value* cond = scope->process(condExpr);
	llvm->builder.CreateCondBr(cond, blockTrue, blockFalse);

	builder.SetInsertPoint(blockTrue);
	CodeScope* scopeTrue = exprIf.blocks.front();
	llvm::Value* resultTrue = function->getScopeUnit(scopeTrue)->compile();
	blockTrue = builder.GetInsertBlock();
	builder.CreateBr(blockAfter);

	builder.SetInsertPoint(blockFalse);
	CodeScope* scopeFalse = exprIf.blocks.back();
	llvm::Value* resultFalse = function->getScopeUnit(scopeFalse)->compile();
	blockFalse = builder.GetInsertBlock();
	builder.CreateBr(blockAfter);

	builder.SetInsertPoint(blockAfter);
	llvm::PHINode *ret = builder.CreatePHI(resultTrue->getType(), 2, NAME("if"));

	ret->addIncoming(resultTrue, blockTrue);
	ret->addIncoming(resultFalse, blockFalse);

	return ret;
	}

	//TODO Switch: default variant no needed when all possible conditions are considered

	llvm::Value*
	Advanced::compileSwitch(const Expression& exprSwitch, const std::string& hintRetVar) {
	EXPAND_CONTEXT
	AST* root = context.pass->man->root;
	UNUSED(function);


	assert(exprSwitch.operands.size() >= 2);
	assert(exprSwitch.operands[1].op == Operator::CASE_DEFAULT && "No default case in Switch Statement");
	int countCases = exprSwitch.operands.size() - 1;
	llvm::IRBuilder<>& builder = llvm->builder;

	llvm::BasicBlock* blockProlog = builder.GetInsertBlock();
	llvm::BasicBlock *blockEpilog = llvm::BasicBlock::Create(llvm::getGlobalContext(), "switchAfter", function->raw);
	builder.SetInsertPoint(blockEpilog);
	llvm::Type* exprSwitchType = llvm->toLLVMType(root->getType(exprSwitch));
	llvm::PHINode *ret = builder.CreatePHI(exprSwitchType, countCases, NAME("switch"));

	builder.SetInsertPoint(blockProlog);
	llvm::Value * conditionSwitch = scope->process(exprSwitch.operands[0]);
	llvm::BasicBlock *blockDefault = llvm::BasicBlock::Create(llvm::getGlobalContext(), "caseDefault", function->raw);
	llvm::SwitchInst * instructionSwitch = builder.CreateSwitch(conditionSwitch, blockDefault, countCases);

	for (int size = exprSwitch.operands.size(), i = 2; i < size; ++i) {
	llvm::BasicBlock *blockCase = llvm::BasicBlock::Create(llvm::getGlobalContext(), "case" + std::to_string(i), function->raw);

	llvm::Value* condCase = function->getScopeUnit(exprSwitch.operands[i].blocks.front())->compile();
	builder.SetInsertPoint(blockCase);
	llvm::Value* resultCase = function->getScopeUnit(exprSwitch.operands[i].blocks.back())->compile();
	builder.CreateBr(blockEpilog);

	ret->addIncoming(resultCase, builder.GetInsertBlock());
	builder.SetInsertPoint(blockProlog);
	instructionSwitch->addCase(dyn_cast<llvm::ConstantInt>(condCase), blockCase);
	}

	//compile default block:
	builder.SetInsertPoint(blockDefault);
	CodeScope* scopeDefault = exprSwitch.operands[1].blocks.front();
	llvm::Value* resultDefault = function->getScopeUnit(scopeDefault)->compile();
	builder.CreateBr(blockEpilog);
	ret->addIncoming(resultDefault, builder.GetInsertBlock());
	builder.SetInsertPoint(blockEpilog);

	return ret;
	}

	//TODO recognize cases to make const arrays/stored in global mem/stack alloced.
	llvm::Value*
	Advanced::compileListAsSolidArray(const Expression &expr, const std::string& hintRetVar) {
	EXPAND_CONTEXT
	UNUSED(scope);
	UNUSED(function);

	AST* root = context.pass->man->root;
	const size_t& length = expr.getOperands().size();
	const Expression& expression = expr;
	llvm::Value* zero = ConstantInt::get(tyNum, 0);
	llvm::Value* one = ConstantInt::get(tyNum, 1);

	ExpandedType typAggrExpanded = root->getType(expression);
	assert(typAggrExpanded->__operator == TypeOperator::ARRAY);
	llvm::Type* typEl = llvm->toLLVMType(ExpandedType(typAggrExpanded->__operands[0]));
	ArrayType* typAggr = (ArrayType*) llvm::ArrayType::get(typEl, length);
	llvm::Value* list = llvm->builder.CreateAlloca(typAggr, ConstantInt::get(Type::getInt32Ty(llvm::getGlobalContext()), length, false), hintRetVar);

	const std::vector<Expression>& operands = expression.getOperands();
	llvm::Value* addrOperand = llvm->builder.CreateGEP(typAggr, list, ArrayRef<Value >(std::vector<Value>{zero, zero}));
	llvm->builder.CreateStore(scope->process(operands.front()), addrOperand) ;
	for (auto i=++operands.begin(); i!=operands.end(); ++i){
	addrOperand = llvm->builder.CreateGEP(typEl, addrOperand, ArrayRef<Value >(std::vector<Value>{one}));
	llvm->builder.CreateStore(scope->process(*i), addrOperand) ;
	}

	return list;
	// Value* listDest = l.builder.CreateAlloca(typList, ConstantInt::get(typI32, __size), *hintRetVar);
	// l.buil1der.CreateMemCpy(listDest, listSource, __size, 16);
	}

	llvm::Value*
	Advanced::compileConstantStringAsPChar(const string& data, const std::string& hintRetVar) {
	EXPAND_CONTEXT
	UNUSED(function);
	UNUSED(scope);

	Type* typPchar = PointerType::getUnqual(Type::getInt8Ty(llvm::getGlobalContext()));
	//ArrayType* typStr = (ArrayType*) (llvm->toLLVMType(ExpandedType(TypeAnnotation(tag_array, TypePrimitive::I8, size+1))));

	/*
	std::vector<Constant *> chars;
	chars.reserve(size+1);

	for (size_t i=0; i< size; ++i){
	chars[i] = ConstantInt::get(typI8, (unsigned char) data[i]);
	}
	chars[size] = ConstantInt::get(typI8, 0);
	*/

	Value* rawData = ConstantDataArray::getString(llvm::getGlobalContext(), data);
	Value* rawPtrData = llvm->builder.CreateAlloca(rawData->getType(), ConstantInt::get(Type::getInt32Ty(llvm::getGlobalContext()), 1, false));
	llvm->builder.CreateStore(rawData, rawPtrData);
	return llvm->builder.CreateCast(llvm::Instruction::BitCast, rawPtrData, typPchar, hintRetVar);
	}
	diff --git a/cpp/src/compilation/targetinterpretation.cpp b/cpp/src/compilation/targetinterpretation.cpp
	index 33cbd3f..569db6c 100644
	--- a/cpp/src/compilation/targetinterpretation.cpp
	+++ b/cpp/src/compilation/targetinterpretation.cpp
	@@ -1,497 +1,569 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* File: targetinterpretation.cpp
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on June 29, 2016, 6:45 PM
	*/

	#include "compilation/targetinterpretation.h"
	#include "pass/interpretationpass.h"
	#include "analysis/typeinference.h"
	#include "llvmlayer.h"
	#include "compilation/scopedecorators.h"

	#include <boost/scoped_ptr.hpp>
	#include <iostream>
	#include <clang/AST/DeclBase.h>

	using namespace std;
	using namespace xreate::compilation;

	namespace xreate{ namespace interpretation{

	const Expression EXPRESSION_FALSE = Expression(Atom<Number_t>(0));
	const Expression EXPRESSION_TRUE = Expression(Atom<Number_t>(1));

	-//Expression
	-//InterpretationScope::compile(const Expression& expression){}
	+Expression
	+representAsAnnotation(const Gringo::Symbol& atom){
	+ switch (atom.type()) {
	+ case Gringo::SymbolType::Num: {
	+ Expression result(Operator::VARIANT, {Expression(atom.num())});
	+ result.setValueDouble(0);
	+ return result;
	+ }
	+
	+ case Gringo::SymbolType::Str: {
	+ Expression result(Operator::VARIANT, {Expression(Atom<String_t>(std::string(atom.string().c_str())))});
	+ result.setValueDouble(1);
	+ return result;
	+ }
	+
	+ case Gringo::SymbolType::Fun:
	+ {
	+ Expression fnDescription(Operator::LIST_NAMED, {});
	+ std::list<Atom<Identifier_t>> bindings{Atom<Identifier_t>("name"), Atom<Identifier_t>("arguments")};
	+ fnDescription.addBindings(bindings.begin(), bindings.end());
	+
	+ fnDescription.addArg(Expression(Atom<String_t>(std::string(atom.name().c_str()))));
	+
	+ Expression args(Operator::LIST, {});
	+ for (const Gringo::Symbol& arg : atom.args()) {
	+ args.addArg(representAsAnnotation(arg));
	+ }
	+
	+ fnDescription.addArg(std::move(args));
	+
	+ Expression result(Operator::VARIANT, {fnDescription});
	+ result.setValueDouble(2);
	+ return result;
	+ }
	+
	+ default:
	+ {
	+ assert(false);
	+ }
	+ }
	+}

	CodeScope*
	InterpretationScope::processOperatorIf(const Expression& expression){
	const Expression& exprCondition = process(expression.getOperands()[0]);

	if (exprCondition == EXPRESSION_TRUE){
	return expression.blocks.front();
	}

	return expression.blocks.back();
	}

	CodeScope*
	InterpretationScope::processOperatorSwitch(const Expression& expression) {
	const Expression& exprCondition = process(expression.operands[0]);

	bool flagHasDefault = expression.operands[1].op == Operator::CASE_DEFAULT;

	//TODO check that one and only one case variant is appropriate
	for (size_t size = expression.operands.size(), i= flagHasDefault? 2: 1; i<size; ++i){
	const Expression& exprCase = process(expression.operands[i]);

	if (function->getScope(exprCase.blocks.front())->processScope() == exprCondition){
	return exprCase.blocks.back();
	}
	}

	if (flagHasDefault){
	const Expression& exprCaseDefault = expression.operands[1];
	return exprCaseDefault.blocks.front();
	}

	assert(false && "Switch has no appropriate variant");
	return nullptr;
	}

	CodeScope*
	InterpretationScope::processOperatorSwitchVariant(const Expression& expression){
	const Expression& condition = process(expression.operands.at(0));
	assert(condition.op == Operator::VARIANT);
	const string identCondition = expression.bindings.front();

	Expression opExpected(Atom<Number_t>(condition.getValueDouble()));
	auto itFoundValue = std::find(++expression.operands.begin(), expression.operands.end(), opExpected);
	assert(itFoundValue != expression.operands.end());

	int indexBlock = itFoundValue - expression.operands.begin() -1;
	auto blockFound = expression.blocks.begin();
	std::advance(blockFound, indexBlock);

	InterpretationScope* scopeI12n = function->getScope(*blockFound);

	if (condition.operands.size()) {
	const Expression& value = condition.operands.at(0);
	scopeI12n->overrideBinding(value, identCondition);
	}

	return *blockFound;
	}

	llvm::Value*
	InterpretationScope::compileHybrid(const InterpretationOperator& op, const Expression& expression, const Context& context){
	switch(op){
	case IF_INTERPRET_CONDITION: {
	CodeScope* scopeResult = processOperatorIf(expression);

	llvm::Value* result = context.function->getScopeUnit(scopeResult)->compile();
	return result;
	}

	case SWITCH_INTERPRET_CONDITION:{
	CodeScope* scopeResult = processOperatorSwitch(expression);

	llvm::Value* result = context.function->getScopeUnit(scopeResult)->compile();
	return result;
	}

	case SWITCH_VARIANT: {
	CodeScope* scopeResult = processOperatorSwitchVariant(expression);
	- const Expression& condition = process(expression.operands.at(0));
	+ const Expression& condition = expression.operands.at(0);
	+ const Expression& valueCondition = process(condition);

	const string identCondition = expression.bindings.front();
	auto scopeCompilation = Decorators<CachedScopeDecoratorTag>::getInterface(context.function->getScopeUnit(scopeResult));

	- if(condition.operands.size()){
	+ if(valueCondition.operands.size()){
	//override value
	Symbol symbCondition{ScopedSymbol{scopeResult->__identifiers.at(identCondition), versions::VERSION_NONE}, scopeResult};
	- scopeCompilation->overrideDeclaration(symbCondition, Expression(condition.operands.at(0)));
	+ scopeCompilation->overrideDeclaration(symbCondition, Expression(valueCondition.operands.at(0)));

	//set correct type for binding:
	TypeAnnotation typeVariant = typeinference::getType(condition, *function->man->ast);
	- int conditionIndex = condition.getValueDouble();
	+ int conditionIndex = valueCondition.getValueDouble();
	ScopedSymbol symbolInternal = scopeResult->getSymbol(identCondition);
	scopeResult->__declarations[symbolInternal].bindType(typeVariant.__operands.at(conditionIndex));
	}

	llvm::Value* result = context.function->getScopeUnit(scopeResult)->compile();
	return result;
	}

	case FOLD_INTERPRET_INPUT: {
	//initialization
	const Expression& exprInput = process(expression.getOperands()[0]);
	assert(exprInput.op == Operator::LIST);

	CodeScope* scopeBody = expression.blocks.front();

	const string& nameEl = expression.bindings[0];
	Symbol symbEl{ScopedSymbol{scopeBody->__identifiers.at(nameEl), versions::VERSION_NONE}, scopeBody};
	const std::string& idAccum = expression.bindings[1];
	llvm::Value* rawAccum = context.scope->process(expression.getOperands()[1]);

	InterpretationScope* intrBody = function->getScope(scopeBody);
	auto unitBody = Decorators<CachedScopeDecoratorTag>::getInterface(context.function->getScopeUnit(scopeBody));

	const std::vector<Expression> elementsInput= exprInput.getOperands();

	for (size_t i=0; i<elementsInput.size(); ++i){
	intrBody->reset();
	unitBody->reset();

	Expression exprElement = elementsInput[i];

	intrBody->overrideBinding(exprElement, nameEl);
	unitBody->overrideDeclaration(symbEl, move(exprElement));
	unitBody->bindArg(rawAccum, string(idAccum));

	rawAccum = unitBody->compile();
	}

	return rawAccum;
	}

	/*
	case FOLD_INF_INTERPRET_INOUT{
	}
	*/

	case CALL_INTERPRET_PARTIAL: {
	const std::string &calleeName = expression.getValueString();
	ICodeScopeUnit* scopeUnitSelf = context.scope;
	ManagedFnPtr callee = this->function->man->ast->findFunction(calleeName);
	const FunctionInterpretationData& calleeData = FunctionInterpretationHelper::getSignature(callee);
	std::vector<llvm::Value *> argsActual;
	PIFSignature sig;
	sig.declaration = callee;

	for(size_t no=0, size = expression.operands.size(); no < size; ++no){
	const Expression& op = expression.operands[no];

	if (calleeData.signature.at(no) == INTR_ONLY){
	sig.bindings.push_back(process(op));
	continue;
	}

	argsActual.push_back(scopeUnitSelf->process(op));
	}

	TargetInterpretation* man = dynamic_cast<TargetInterpretation*>(this->function->man);
	PIFunction* pifunction = man->getFunction(move(sig));

	llvm::Function* raw = pifunction->compile();
	boost::scoped_ptr<CallStatementRaw> statement(new CallStatementRaw(raw, man->pass->man->llvm));
	return (*statement)(move(argsActual));
	}

	default: break;
	}

	assert(false&& "Unknown hybrid operator");
	return nullptr;
	}

	llvm::Value*
	InterpretationScope::compile(const Expression& expression, const Context& context){
	const InterpretationData& data = Attachments::get<InterpretationData>(expression);

	if (data.op != InterpretationOperator::NONE){
	return compileHybrid(data.op, expression, context);
	}

	Expression result = process(expression);
	return context.scope->process(result);
	}

	Expression
	InterpretationScope::process(const Expression& expression){
	switch (expression.__state){
	case Expression::INVALID:
	assert(false);

	case Expression::NUMBER:
	case Expression::STRING:
	return expression;

	case Expression::IDENT:{
	Symbol s = Attachments::get<Symbol>(expression);
	return Parent::processSymbol(s);
	}

	case Expression::COMPOUND:
	break;

	default: assert(false);
	}

	switch (expression.op) {
	case Operator::EQU: {
	const Expression& left = process(expression.operands[0]);
	const Expression& right = process(expression.operands[1]);

	if (left == right) return EXPRESSION_TRUE;
	return EXPRESSION_FALSE;
	}

	case Operator::NE: {
	const Expression& left = process(expression.operands[0]);
	const Expression& right = process(expression.operands[1]);

	if (left == right) return EXPRESSION_FALSE;
	return EXPRESSION_TRUE;
	}

	case Operator::LOGIC_AND: {
	assert(expression.operands.size() == 1);
	return process (expression.operands[0]);
	}


	// case Operator::LOGIC_OR:
	case Operator::CALL: {
	const std::string &fnName = expression.getValueString();
	ManagedFnPtr fnAst = this->function->man->ast->findFunction(fnName);
	InterpretationFunction* fnUnit = this->function->man->getFunction(fnAst);

	vector<Expression> args;
	args.reserve(expression.getOperands().size());

	for(size_t i=0, size = expression.getOperands().size(); i<size; ++i) {
	args.push_back(process(expression.getOperands()[i]));
	}

	return fnUnit->process(args);
	}

	+ case Operator::CALL_INTRINSIC: {
	+ std::string nameFunction = expression.getValueString();
	+
	+ if(nameFunction=="query"){
	+ assert(expression.operands.size() == 1);
	+ assert(expression.operands.front().__state == Expression::STRING);
	+
	+ std::string namePredicate = expression.operands.front().getValueString();
	+ ClaspLayer::ModelFragment model = (static_cast<TargetInterpretation*>(function->man))->pass->man->clasp->query(namePredicate);
	+
	+ Expression result(Operator::LIST, {});
	+
	+ if(model)
	+ for (const auto& row: boost::make_iterator_range(model.get())) {
	+ result.addArg(representAsAnnotation(std::get<1>(row)));
	+ }
	+
	+ return result;
	+
	+ } else {
	+ assert(false && "Unknown intrinsic");
	+ }
	+ }
	+
	case Operator::IF:{
	CodeScope* scopeResult = processOperatorIf(expression);
	return function->getScope(scopeResult)->processScope();
	}

	case Operator::SWITCH: {
	CodeScope* scopeResult = processOperatorSwitch(expression);
	return function->getScope(scopeResult)->processScope();
	}

	case Operator::SWITCH_VARIANT: {
	CodeScope* scopeResult = processOperatorSwitchVariant(expression);
	return function->getScope(scopeResult)->processScope();
	}

	case Operator::INDEX: {
	- const Expression& exprKey = process(expression.operands[1]);
	- const Expression& exprData = process(expression.operands[0]);
	+ Expression exprData = process(expression.operands[0]);

	- if (exprKey.__state == Expression::STRING){
	- const string& key = exprKey.getValueString();
	- assert(exprData.__indexBindings.count(key));
	+ for (size_t keyId=1; keyId<expression.operands.size(); ++keyId){
	+ const Expression& exprKey = process(expression.operands[keyId]);

	- return exprData.operands[exprData.__indexBindings.at(key)];
	- }
	+ if (exprKey.__state == Expression::STRING){
	+ const string& key = exprKey.getValueString();
	+ assert(exprData.__indexBindings.count(key));
	+ size_t idxKey = exprData.__indexBindings.at(key);
	+
	+ exprData = Expression(exprData.operands.at(idxKey));
	+ continue;
	+ }

	- if (exprKey.__state == Expression::NUMBER){
	- int key = exprKey.getValueDouble();
	- return exprData.operands[key];
	+ if (exprKey.__state == Expression::NUMBER){
	+ int key = exprKey.getValueDouble();
	+ exprData = Expression(exprData.operands[key]);
	+ continue;
	+ }
	+
	+ assert(false && "Inappropriate key");
	}

	- assert(false);
	+ return exprData;
	}

	case Operator::FOLD: {
	const Expression& exprInput = process(expression.getOperands()[0]);
	const Expression& exprInit = process(expression.getOperands()[1]);

	const std::string& argEl = expression.bindings[0];
	const std::string& argAccum = expression.bindings[1];

	InterpretationScope* body = function->getScope(expression.blocks.front());

	Expression accum = exprInit;
	for(size_t size=exprInput.getOperands().size(), i=0; i<size; ++i){
	body->overrideBinding(exprInput.getOperands()[i], argEl);
	body->overrideBinding(accum, argAccum);

	accum = body->processScope();
	}

	return accum;
	}

	// case Operator::MAP: {
	// break;
	// }

	default: break;
	}

	return expression;
	}

	InterpretationFunction*
	TargetInterpretation::getFunction(IFunctionUnit* unit){
	if (__dictFunctionsByUnit.count(unit)) {
	return __dictFunctionsByUnit.at(unit);
	}

	InterpretationFunction* f = new InterpretationFunction(unit->function, this);
	__dictFunctionsByUnit.emplace(unit, f);
	assert(__functions.emplace(unit->function.id(), f).second);

	return f;
	}

	PIFunction*
	TargetInterpretation::getFunction(PIFSignature&& sig){

	auto f = __pifunctions.find(sig);
	if (f != __pifunctions.end()){
	return f->second;
	}

	PIFunction* result = new PIFunction(PIFSignature(sig), __pifunctions.size(), this);
	__pifunctions.emplace(move(sig), result);
	assert(__dictFunctionsByUnit.emplace(result->functionUnit, result).second);

	return result;
	}

	InterpretationScope*
	TargetInterpretation::transformContext(const Context& c){
	return this->getFunction(c.function)->getScope(c.scope->scope);
	}

	llvm::Value*
	TargetInterpretation::compile(const Expression& expression, const Context& ctx){
	return transformContext(ctx)->compile(expression, ctx);
	}

	InterpretationFunction::InterpretationFunction(const ManagedFnPtr& function, Target<TargetInterpretation>* target)
	: Function<TargetInterpretation>(function, target)
	{}

	Expression
	InterpretationFunction::process(const std::vector<Expression>& args){
	InterpretationScope* body = getScope(__function->__entry);

	for(size_t i=0, size = args.size(); i<size; ++i) {
	body->overrideBinding(args.at(i), string(body->scope->__bindings.at(i)));
	}

	return body->processScope();
	}

	// Partial function interpretation

	typedef BasicFunctionUnit PIFunctionUnitParent;
	class PIFunctionUnit: public PIFunctionUnitParent{
	public:

	PIFunctionUnit(ManagedFnPtr f, std::set<size_t>&& arguments, size_t id, CompilePass* p)
	: PIFunctionUnitParent(f, p), argumentsActual(move(arguments)), __id(id)
	{}

	protected:
	std::vector<llvm::Type*> prepareArguments(){
	LLVMLayer* llvm = PIFunctionUnitParent::pass->man->llvm;
	AST* ast = PIFunctionUnitParent::pass->man->root;
	CodeScope* entry = PIFunctionUnitParent::function->__entry;
	std::vector<llvm::Type*> signature;

	for(size_t no: argumentsActual){
	VNameId argId = entry->__identifiers.at(entry->__bindings.at(no));
	ScopedSymbol arg{argId, versions::VERSION_NONE};

	signature.push_back(llvm->toLLVMType(ast->expandType(entry->__declarations.at(arg).type)));
	}

	return signature;
	}

	llvm::Function::arg_iterator prepareBindings(){
	CodeScope* entry = PIFunctionUnitParent::function->__entry;
	ICodeScopeUnit* entryCompilation = PIFunctionUnitParent::getScopeUnit(entry);
	llvm::Function::arg_iterator fargsI = PIFunctionUnitParent::raw->arg_begin();

	for(size_t no: argumentsActual){
	ScopedSymbol arg{entry->__identifiers.at(entry->__bindings.at(no)), versions::VERSION_NONE};

	entryCompilation->bindArg(&*fargsI, arg);
	fargsI->setName(entry->__bindings.at(no));
	++fargsI;
	}

	return fargsI;
	}

	virtual std::string prepareName(){
	return PIFunctionUnitParent::prepareName() + "_" + std::to_string(__id);
	}

	private:
	std::set<size_t> argumentsActual;
	size_t __id;
	};

	PIFunction::PIFunction(PIFSignature&& sig, size_t id, TargetInterpretation* target)
	: InterpretationFunction(sig.declaration, target), signatureInstance(move(sig))
	{
	const FunctionInterpretationData& functionData = FunctionInterpretationHelper::getSignature(signatureInstance.declaration);

	std::set<size_t> argumentsActual;
	for (size_t no=0, size=functionData.signature.size(); no < size; ++no){
	if (functionData.signature.at(no) != INTR_ONLY){
	argumentsActual.insert(no);
	}
	}

	functionUnit = new PIFunctionUnit(signatureInstance.declaration, move(argumentsActual), id, target->pass);
	CodeScope* entry = signatureInstance.declaration->__entry;
	auto entryUnit = Decorators<CachedScopeDecoratorTag>::getInterface<>(functionUnit->getEntry());
	InterpretationScope* entryIntrp = InterpretationFunction::getScope(entry);

	for(size_t no=0, sigNo=0, size = entry->__bindings.size(); no < size; ++no){
	if (functionData.signature.at(no) == INTR_ONLY){
	entryIntrp->overrideBinding(signatureInstance.bindings[sigNo], entry->__bindings[no]);

	VNameId argId = entry->__identifiers.at(entry->__bindings[no]);
	Symbol argSymbol{ScopedSymbol{argId, versions::VERSION_NONE}, entry};
	entryUnit->overrideDeclaration(argSymbol, Expression(signatureInstance.bindings[sigNo]));
	++sigNo;
	}
	}
	}

	llvm::Function*
	PIFunction::compile(){
	llvm::Function* raw = functionUnit->compile();

	return raw;
	}

	bool operator<(const PIFSignature& lhs, const PIFSignature& rhs){
	if (lhs.declaration.id() != rhs.declaration.id()) {
	return lhs.declaration.id() < rhs.declaration.id();
	}

	return lhs.bindings < rhs.bindings;
	}

	bool operator<(const PIFSignature& lhs, PIFunction* const rhs){
	return lhs < rhs->signatureInstance;
	}

	bool operator<(PIFunction* const lhs, const PIFSignature& rhs){
	return lhs->signatureInstance < rhs;
	}

	}}
	diff --git a/cpp/src/compilation/targetinterpretation.h b/cpp/src/compilation/targetinterpretation.h
	index 07a7c6c..d77f733 100644
	--- a/cpp/src/compilation/targetinterpretation.h
	+++ b/cpp/src/compilation/targetinterpretation.h
	@@ -1,128 +1,132 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* File: targetstatic.h
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on July 2, 2016, 1:25 PM
	*/

	#ifndef TARGETSTATIC_H
	#define TARGETSTATIC_H

	#include "ast.h"
	#include "pass/compilepass.h"
	#include "compilation/targets.h"
	#include "pass/interpretationpass.h"
	+#include "clasplayer.h"

	namespace xreate{ namespace interpretation{
	class TargetInterpretation;
	class InterpretationScope;
	class InterpretationFunction;
	}}

	namespace xreate{ namespace compilation{
	template <>
	struct TargetInfo<interpretation::TargetInterpretation> {
	typedef Expression Result;
	typedef interpretation::InterpretationScope Scope;
	typedef interpretation::InterpretationFunction Function;
	};
	}}

	namespace xreate{ namespace interpretation{
	class InterpretationScope: public compilation::Scope<TargetInterpretation>{
	typedef Scope<TargetInterpretation> Parent;

	public:
	InterpretationScope(CodeScope* scope, compilation::Function<TargetInterpretation>* f): Parent(scope, f) {}
	Expression process(const Expression& expression) override;

	llvm::Value* compile(const Expression& expression, const compilation::Context& context);

	private:
	llvm::Value* compileHybrid(const InterpretationOperator& op, const Expression& expression, const compilation::Context& context);
	//llvm::Value* compilePartialFnCall(const Expression& expression, const Context& context);

	CodeScope* processOperatorIf(const Expression& expression);
	CodeScope* processOperatorSwitch(const Expression& expression);
	CodeScope* processOperatorSwitchVariant(const Expression& expression);
	};

	class InterpretationFunction: public compilation::Function<TargetInterpretation>{
	public:
	InterpretationFunction(const ManagedFnPtr& function, compilation::Target<TargetInterpretation>* target);
	Expression process(const std::vector<Expression>& args);
	};

	/*
	* Partially interpreted function signature
	*/
	struct PIFSignature{
	ManagedFnPtr declaration;
	std::vector<Expression> bindings;
	};

	class PIFunctionUnit;

	class PIFunction: public InterpretationFunction{
	public:
	PIFunctionUnit* functionUnit;
	PIFSignature signatureInstance;

	PIFunction(PIFSignature&& sig, size_t id, TargetInterpretation* target);
	llvm::Function* compile();
	};

	bool operator<(const PIFSignature& lhs, PIFunction* const rhs);
	bool operator<(PIFunction* const lhs, const PIFSignature& rhs);

	class TargetInterpretation: public compilation::Target<TargetInterpretation>{
	public:
	TargetInterpretation(AST* root, CompilePass* passCompilation): Target<TargetInterpretation>(root), pass(passCompilation){}

	//target:
	public:
	InterpretationFunction* getFunction(compilation::IFunctionUnit* unit);
	PIFunction* getFunction(PIFSignature&& sig);

	private:
	std::map<PIFSignature, PIFunction*> __pifunctions;
	std::map<compilation::IFunctionUnit, InterpretationFunction> __dictFunctionsByUnit;

	//self:
	public:
	CompilePass* pass;
	llvm::Value* compile(const Expression& expression, const compilation::Context& ctx);
	private:
	InterpretationScope* transformContext(const compilation::Context& c);
	};

	template<class Parent>
	class InterpretationScopeDecorator: public Parent{
	public:
	InterpretationScopeDecorator(CodeScope* codeScope, compilation::IFunctionUnit* f, CompilePass* compilePass): Parent(codeScope, f, compilePass){}

	virtual llvm::Value* process(const Expression& expr, const std::string& hintVarDecl){
	const InterpretationData& data = Attachments::get<InterpretationData>(expr, {ANY, NONE});
	bool flagInterpretationEligible = (data.resolution == INTR_ONLY \|\| data.op != InterpretationOperator::NONE);

	if (flagInterpretationEligible){
	compilation::Context ctx{this, this->function, this->pass};
	return Parent::pass->targetInterpretation->compile(expr, ctx);
	}

	return Parent::process(expr, hintVarDecl);
	}
	};
	+
	+Expression representAsAnnotation(const Gringo::Symbol& symbol);
	+
	}} //end of xreate:: interpretation

	#endif /* TARGETSTATIC_H */


	//transformers:
	// template<>
	// struct TransformerInfo<TargetInterpretation> {
	// static const int id = 1;
	// };
	diff --git a/cpp/src/pass/compilepass.cpp b/cpp/src/pass/compilepass.cpp
	index ebda44d..a30e97d 100644
	--- a/cpp/src/pass/compilepass.cpp
	+++ b/cpp/src/pass/compilepass.cpp
	@@ -1,800 +1,800 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* Author: pgess <v.melnychenko@xreate.org>
	- *
	+ *
	* compilepass.cpp
	*/

	#include "compilepass.h"
	#include "clasplayer.h"
	#include <ast.h>
	#include "llvmlayer.h"

	#include "query/containers.h"
	#include "query/context.h"
	#include "compilation/containers.h"
	#include "compilation/latecontextcompiler2.h"
	#include "ExternLayer.h"
	#include "pass/adhocpass.h"
	#include "compilation/targetinterpretation.h"
	#include "pass/versionspass.h"
	#include "compilation/scopedecorators.h"
	#include "compilation/adhocfunctiondecorator.h"
	#include "compilation/operators.h"
	#include "analysis/typeinference.h"

	#include <boost/optional.hpp>
	#include <memory>
	#include <iostream>

	using namespace std;
	using namespace llvm;

	//TODO use Scope<TargetLlvm>

	//SECTIONTAG late-context FunctionDecorator

	namespace xreate{namespace context{
	template<class Parent>
	class LateContextFunctionDecorator : public Parent {
	public:
	LateContextFunctionDecorator(ManagedFnPtr f, CompilePass* p)
	: Parent(f, p), contextCompiler(this, p) {
	}

	protected:
	std::vector<llvm::Type*> prepareArguments() {
	std::vector<llvm::Type*>&& arguments = Parent::prepareArguments();

	size_t sizeLateContextDemand = contextCompiler.getFunctionDemandSize();
	if (sizeLateContextDemand) {
	llvm::Type* ty32 = llvm::Type::getInt32Ty(llvm::getGlobalContext());
	llvm::Type* tyDemand = llvm::ArrayType::get(ty32, sizeLateContextDemand);

	arguments.push_back(tyDemand);
	}

	return arguments;
	}

	llvm::Function::arg_iterator prepareBindings() {
	llvm::Function::arg_iterator fargsI = Parent::prepareBindings();

	size_t sizeLateContextDemand = contextCompiler.getFunctionDemandSize();
	if (sizeLateContextDemand) {
	fargsI->setName("latecontext");
	contextCompiler.rawContextArgument = &*fargsI;
	++fargsI;
	}

	return fargsI;
	}

	public:
	context::LateContextCompiler2 contextCompiler;
	};

	}} //end of namespace xreate::context

	namespace xreate { namespace compilation{

	std::string
	BasicFunctionUnit::prepareName(){
	AST* ast = IFunctionUnit::pass->man->root;

	string name = ast->getFunctionVariants(IFunctionUnit::function->__name).size() > 1 ?
	IFunctionUnit::function->__name + std::to_string(IFunctionUnit::function.id()) :
	IFunctionUnit::function->__name;

	return name;
	}

	std::vector<llvm::Type*>
	BasicFunctionUnit::prepareArguments() {
	LLVMLayer* llvm = IFunctionUnit::pass->man->llvm;
	AST* ast = IFunctionUnit::pass->man->root;
	CodeScope* entry = IFunctionUnit::function->__entry;
	std::vector<llvm::Type*> signature;

	std::transform(entry->__bindings.begin(), entry->__bindings.end(), std::inserter(signature, signature.end()),
	[llvm, ast, entry](const std::string & arg)->llvm::Type* {
	assert(entry->__identifiers.count(arg));

	ScopedSymbol argid{entry->__identifiers.at(arg), versions::VERSION_NONE};
	return llvm->toLLVMType(ast->expandType(entry->__declarations.at(argid).type));
	});

	return signature;
	}

	llvm::Type*
	BasicFunctionUnit::prepareResult() {
	LLVMLayer* llvm = IFunctionUnit::pass->man->llvm;
	AST* ast = IFunctionUnit::pass->man->root;
	CodeScope* entry = IFunctionUnit::function->__entry;

	return llvm->toLLVMType(ast->expandType(entry->__declarations.at(ScopedSymbol::RetSymbol).type));
	}

	llvm::Function::arg_iterator
	BasicFunctionUnit::prepareBindings() {
	CodeScope* entry = IFunctionUnit::function->__entry;
	ICodeScopeUnit* entryCompilation = IFunctionUnit::getScopeUnit(entry);
	llvm::Function::arg_iterator fargsI = IFunctionUnit::raw->arg_begin();

	for (std::string &arg : entry->__bindings) {
	ScopedSymbol argid{entry->__identifiers[arg], versions::VERSION_NONE};

	entryCompilation->bindArg(&*fargsI, argid);
	fargsI->setName(arg);
	++fargsI;
	}

	return fargsI;
	}

	//DEBT compiler rigidly depends on exact definition of DefaultFunctionUnit
	typedef context::LateContextFunctionDecorator<
	adhoc::AdhocFunctionDecorator<
	BasicFunctionUnit>> DefaultFunctionUnit;

	ICodeScopeUnit::ICodeScopeUnit(CodeScope* codeScope, IFunctionUnit* f, CompilePass* compilePass)
	: pass(compilePass), function(f), scope(codeScope) {
	}

	llvm::Value*
	CallStatementRaw::operator()(std::vector<llvm::Value *>&& args, const std::string& hintDecl) {
	llvm::Function* calleeInfo = dyn_cast<llvm::Function>(__callee);

	if (calleeInfo) {
	auto argsFormal = calleeInfo->args();

	int pos = 0;
	//SECTIONTAG types/convert function ret value
	for (auto argFormal = argsFormal.begin(); argFormal != argsFormal.end(); ++argFormal, ++pos) {
	args[pos] = typeinference::doAutomaticTypeConversion(args[pos], argFormal->getType(), llvm->builder);
	}
	}

	return llvm->builder.CreateCall(__calleeTy, __callee, args, hintDecl);
	}

	//DESABLEDFEATURE implement inlining
	class CallStatementInline : public CallStatement {
	public:
	CallStatementInline(IFunctionUnit* caller, IFunctionUnit* callee, LLVMLayer* l)
	: __caller(caller), __callee(callee), llvm(l) {
	}

	llvm::Value* operator()(std::vector<llvm::Value *>&& args, const std::string& hintDecl) {
	//TOTEST inlining
	// CodeScopeUnit* entryCompilation = outer->getScopeUnit(function->__entry);
	// for(int i=0, size = args.size(); i<size; ++i) {
	// entryCompilation->bindArg(args.at(i), string(entryCompilation->scope->__bindings.at(i)));
	// }
	//
	//
	// return entryCompilation->compile();

	return nullptr;
	}

	private:
	IFunctionUnit* __caller;
	IFunctionUnit* __callee;
	LLVMLayer* llvm;

	bool isInline() {
	// Symbol ret = Symbol{0, function->__entry};
	// bool flagOnTheFly = SymbolAttachments::get<IsImplementationOnTheFly>(ret, false);
	//TODO consider inlining
	return false;
	}
	};

	BasicCodeScopeUnit::BasicCodeScopeUnit(CodeScope* codeScope, IFunctionUnit* f, CompilePass* compilePass)
	: ICodeScopeUnit(codeScope, f, compilePass) {
	}

	llvm::Value*
	BasicCodeScopeUnit::processSymbol(const Symbol& s, std::string hintRetVar) {
	Expression declaration = CodeScope::getDeclaration(s);
	CodeScope* scope = s.scope;
	ICodeScopeUnit* self = ICodeScopeUnit::function->getScopeUnit(scope);

	return self->process(declaration, hintRetVar);
	}

	//SECTIONTAG late-context find callee function
	//TOTEST static late context decisions
	//TOTEST dynamic late context decisions
	CallStatement*
	BasicCodeScopeUnit::findFunction(const std::string& calleeName) {
	LLVMLayer* llvm = pass->man->llvm;
	ClaspLayer* clasp = pass->man->clasp;
	DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*> (this->function);
	context::ContextQuery* queryContext = pass->queryContext;

	const std::list<ManagedFnPtr>& specializations = pass->man->root->getFunctionVariants(calleeName);

	//if no specializations registered - check external function
	if (specializations.size() == 0) {
	llvm::Function* external = llvm->layerExtern->lookupFunction(calleeName);

	llvm::outs() << "Debug/External function: " << calleeName;
	external->getType()->print(llvm::outs(), true);
	llvm::outs() << "\n";

	return new CallStatementRaw(external, llvm);
	}

	//no decisions required
	if (specializations.size() == 1) {
	if (!specializations.front()->guardContext.isValid()) {
	return new CallStatementRaw(pass->getFunctionUnit(specializations.front())->compile(), llvm);
	}
	}

	//TODO move dictSpecialization over to a separate function in order to perform cache, etc.
	//prepare specializations dictionary
	std::map<Expression, ManagedFnPtr> dictSpecializations;

	boost::optional<ManagedFnPtr> variantDefault;
	boost::optional<ManagedFnPtr> variant;

	for (const ManagedFnPtr& f : specializations) {
	const Expression& guard = f->guardContext;

	//default case:
	if (!guard.isValid()) {
	variantDefault = f;
	continue;
	}

	assert(dictSpecializations.emplace(guard, f).second && "Found several identical specializations");
	}

	//check static context
	ScopePacked scopeCaller = clasp->pack(this->scope);
	const string atomSpecialization = "specialization";
	const Expression topicSpecialization(Operator::CALL,{(Atom<Identifier_t>(string(atomSpecialization))),
	Expression(Operator::CALL,
	{Atom<Identifier_t>(string(calleeName))}),
	Atom<Number_t>(scopeCaller)});

	const context::Decisions& decisions = queryContext->getFinalDecisions(scopeCaller);
	if (decisions.count(topicSpecialization)) {
	variant = dictSpecializations.at(decisions.at(topicSpecialization));
	}

	//TODO check only demand for this particular topic.
	size_t sizeDemand = function->contextCompiler.getFunctionDemandSize();

	//decision made if static context found or no late context exists(and there is default variant)
	bool flagHasStaticDecision = variant \|\| (variantDefault && !sizeDemand);

	//if no late context exists
	if (flagHasStaticDecision) {
	IFunctionUnit* calleeUnit = pass->getFunctionUnit(variant ? variant : variantDefault);

	//inlining possible based on static decision only
	// if (calleeUnit->isInline()) {
	// return new CallStatementInline(function, calleeUnit);
	// }

	return new CallStatementRaw(calleeUnit->compile(), llvm);
	}

	//require default variant if no static decision made
	assert(variantDefault);

	llvm::Function* functionVariantDefault = this->pass->getFunctionUnit(*variantDefault)->compile();
	llvm::Value* resultFn = function->contextCompiler.findFunction(calleeName, functionVariantDefault, scopeCaller);
	llvm::PointerType *resultPTy = cast<llvm::PointerType>(resultFn->getType());
	llvm::FunctionType *resultFTy = cast<llvm::FunctionType>(resultPTy->getElementType());
	return new CallStatementRaw(resultFn, resultFTy, llvm);
	}



	//DISABLEDFEATURE transformations
	// if (pass->transformations->isAcceptable(expr)){
	// return pass->transformations->transform(expr, result, ctx);
	// }

	llvm::Value*
	BasicCodeScopeUnit::process(const Expression& expr, const std::string& hintVarDecl) {
	#define DEFAULT(x) (hintVarDecl.empty()? x: hintVarDecl)
	llvm::Value *left;
	llvm::Value *right;
	LLVMLayer& l = *pass->man->llvm;
	xreate::compilation::Advanced instructions = xreate::compilation::Advanced({this, function, pass});

	switch (expr.op) {
	case Operator::SUB: case Operator::MUL:
	case Operator::DIV: case Operator::EQU: case Operator::LSS:
	case Operator::GTR: case Operator::NE: case Operator::LSE:
	case Operator::GTE:

	assert(expr.__state == Expression::COMPOUND);
	assert(expr.operands.size() == 2);

	left = process(expr.operands[0]);
	right = process(expr.operands[1]);

	//SECTIONTAG types/convert binary operation
	right = typeinference::doAutomaticTypeConversion(right, left->getType(), l.builder);
	break;

	default:;
	}

	switch (expr.op) {
	case Operator::ADD:
	{
	left = process(expr.operands[0]);
	Context context{this, function, pass};

	llvm::Value* resultSU = StructUpdate::add(expr.operands[0], left, expr.operands[1], context, DEFAULT("tmp_add"));
	if (resultSU) return resultSU;

	right = process(expr.operands[1]);

	llvm::Value* resultAddPA = pointerarithmetic::PointerArithmetic::add(left, right, context, DEFAULT("tmp_add"));
	if (resultAddPA) {
	return resultAddPA;
	}

	return l.builder.CreateAdd(left, right, DEFAULT("tmp_add"));
	break;
	}

	case Operator::SUB:
	return l.builder.CreateSub(left, right, DEFAULT("tmp_sub"));
	break;

	case Operator::MUL:
	return l.builder.CreateMul(left, right, DEFAULT("tmp_mul"));
	break;

	case Operator::DIV:
	return l.builder.CreateSDiv(left, right, DEFAULT("tmp_div"));
	break;

	case Operator::EQU:
	if (left->getType()->isIntegerTy()) return l.builder.CreateICmpEQ(left, right, DEFAULT("tmp_equ"));
	if (left->getType()->isFloatingPointTy()) return l.builder.CreateFCmpOEQ(left, right, DEFAULT("tmp_equ"));
	break;

	case Operator::NE:
	return l.builder.CreateICmpNE(left, right, DEFAULT("tmp_ne"));
	break;

	case Operator::LSS:
	return l.builder.CreateICmpSLT(left, right, DEFAULT("tmp_lss"));
	break;

	case Operator::LSE:
	return l.builder.CreateICmpSLE(left, right, DEFAULT("tmp_lse"));
	break;

	case Operator::GTR:
	return l.builder.CreateICmpSGT(left, right, DEFAULT("tmp_gtr"));
	break;

	case Operator::GTE:
	return l.builder.CreateICmpSGE(left, right, DEFAULT("tmp_gte"));
	break;

	case Operator::NEG:
	left = process(expr.operands[0]);
	return l.builder.CreateNeg(left, DEFAULT("tmp_neg"));
	break;

	case Operator::CALL:
	{
	assert(expr.__state == Expression::COMPOUND);

	std::string nameCallee = expr.getValueString();
	shared_ptr<CallStatement> callee(findFunction(nameCallee));

	//prepare arguments
	std::vector<llvm::Value *> args;
	args.reserve(expr.operands.size());

	std::transform(expr.operands.begin(), expr.operands.end(), std::inserter(args, args.end()),
	[this](const Expression & operand) {
	return process(operand);
	}
	);

	ScopePacked outerScopeId = pass->man->clasp->pack(this->scope);

	//TASK a) refactor CALL/ADHOC/find function
	//SECTIONTAG late-context propagation arg
	size_t calleeDemandSize = pass->queryContext->getFunctionDemand(nameCallee).size();
	if (calleeDemandSize) {
	DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*> (this->function);
	llvm::Value* argLateContext = function->contextCompiler.compileContextArgument(nameCallee, outerScopeId);
	args.push_back(argLateContext);
	}

	return (*callee)(move(args), DEFAULT("res_" + nameCallee));
	}

	case Operator::IF:
	{
	return instructions.compileIf(expr, DEFAULT("tmp_if"));
	}

	case Operator::SWITCH:
	{
	return instructions.compileSwitch(expr, DEFAULT("tmp_switch"));
	}

	case Operator::LOOP_CONTEXT:
	{
	assert(false);
	return nullptr;
	//return instructions.compileLoopContext(expr, DEFAULT("tmp_loop"));
	}

	case Operator::LOGIC_AND:
	{
	assert(expr.operands.size() == 1);
	return process(expr.operands[0]);
	}

	case Operator::LIST:
	{
	return instructions.compileListAsSolidArray(expr, DEFAULT("tmp_list"));
	};

	case Operator::LIST_RANGE:
	{
	assert(false); //no compilation phase for a range list
	// return InstructionList(this).compileConstantArray(expr, l, hintRetVar);
	};

	case Operator::LIST_NAMED:
	{
	typedef Expanded<TypeAnnotation> ExpandedType;

	ExpandedType tyStructLiteral = l.ast->getType(expr);

	const std::vector<string> fieldsFormal = (tyStructLiteral.get().__operator == TypeOperator::CUSTOM) ?
	l.layerExtern->getStructFields(l.layerExtern->lookupType(tyStructLiteral.get().__valueCustom))
	: tyStructLiteral.get().fields;

	std::map<std::string, size_t> indexFields;
	for (size_t i = 0, size = fieldsFormal.size(); i < size; ++i) {
	indexFields.emplace(fieldsFormal[i], i);
	}

	llvm::StructType* tyLiteralRaw = llvm::cast<llvm::StructType>(l.toLLVMType(tyStructLiteral));
	llvm::Value* record = llvm::UndefValue::get(tyLiteralRaw);

	for (size_t i = 0; i < expr.operands.size(); ++i) {
	const Expression& operand = expr.operands.at(i);
	unsigned int fieldId = indexFields.at(expr.bindings.at(i));

	llvm::Value* result = 0;

	//TODO Null ad hoc llvm implementation (related code: operators/StructUpdate/add)
	// if (operand.isNone()){
	// llvm::Type* tyNullField = tyRecord->getElementType(fieldId);
	// result = llvm::UndefValue::get(tyNullField);
	//
	// } else {
	result = process(operand);
	// }

	assert(result);
	record = l.builder.CreateInsertValue(record, result, llvm::ArrayRef<unsigned>({fieldId}));
	}

	return record;
	};

	case Operator::MAP:
	{
	assert(expr.blocks.size());
	return instructions.compileMapSolidOutput(expr, DEFAULT("map"));
	};

	case Operator::FOLD:
	{
	return instructions.compileFold(expr, DEFAULT("fold"));
	};

	case Operator::FOLD_INF:
	{
	return instructions.compileFoldInf(expr, DEFAULT("fold"));
	};

	case Operator::INDEX:
	{
	- //TODO allow multiindex
	+ //TASK allow multiindex compilation
	assert(expr.operands.size() == 2);
	assert(expr.operands[0].__state == Expression::IDENT);

	const std::string& hintIdent = expr.operands[0].getValueString();
	Symbol s = Attachments::get<Symbol>(expr.operands[0]);
	const ExpandedType& t2 = pass->man->root->getType(expr.operands[0]);

	llvm::Value* aggr = processSymbol(s, hintIdent);

	switch (t2.get().__operator) {
	case TypeOperator::STRUCT: case TypeOperator::CUSTOM:
	{
	std::string idxField;
	const Expression& idx = expr.operands.at(1);
	switch (idx.__state) {

	//named struct field
	case Expression::STRING:
	idxField = idx.getValueString();
	break;

	//anonymous struct field
	case Expression::NUMBER:
	idxField = to_string((int) idx.getValueDouble());
	break;

	default:
	assert(false && "Wrong index for a struct");
	}

	return instructions.compileStructIndex(aggr, t2, idxField);
	};

	case TypeOperator::ARRAY:
	{
	std::vector<llvm::Value*> indexes;
	std::transform(++expr.operands.begin(), expr.operands.end(), std::inserter(indexes, indexes.end()),
	[this] (const Expression & op) {
	return process(op);
	}
	);

	return instructions.compileArrayIndex(aggr, indexes, DEFAULT(string("el_") + hintIdent));
	};

	default:
	assert(false);
	}
	};

	//SECTIONTAG adhoc actual compilation
	//TODO a) make sure that it's correct: function->adhocImplementation built for Entry scope and used in another scope
	case Operator::ADHOC:
	{
	DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*> (this->function);
	assert(function->adhocImplementation && "Adhoc implementation not found");
	const Expression& comm = adhoc::AdhocExpression(expr).getCommand();

	CodeScope* scope = function->adhocImplementation->getCommandImplementation(comm);
	ICodeScopeUnit* unitScope = function->getScopeUnit(scope);

	//SECTIONTAG types/convert ADHOC ret convertation
	llvm::Type* resultTy = l.toLLVMType(pass->man->root->expandType(function->adhocImplementation->getResultType()));
	return typeinference::doAutomaticTypeConversion(unitScope->compile(), resultTy, l.builder);
	};

	case Operator::CALL_INTRINSIC:
	{
	const std::string op = expr.getValueString();

	if (op == "copy") {
	llvm::Value* result = process(expr.getOperands().at(0));

	auto decoratorVersions = Decorators<VersionsScopeDecoratorTag>::getInterface(this);
	llvm::Value* storage = decoratorVersions->processIntrinsicInit(result->getType());
	decoratorVersions->processIntrinsicCopy(result, storage);

	return l.builder.CreateLoad(storage, hintVarDecl);
	}

	assert(false && "undefined intrinsic");
	}

	case Operator::VARIANT:
	{
	//TASK Variant compilation to implement
	assert(false&& "Variant compilation not implemented yet");
	return nullptr;
	// const ExpandedType& typVariant = pass->man->root->getType(expr);
	// llvm::Type* typRaw = l.toLLVMType(typVariant);
	// int value = expr.getValueDouble();
	// return llvm::ConstantInt::get(typRaw, value);
	}

	case Operator::NONE:
	assert(expr.__state != Expression::COMPOUND);

	switch (expr.__state) {
	case Expression::IDENT:
	{
	Symbol s = Attachments::get<Symbol>(expr);
	return processSymbol(s, expr.getValueString());
	}

	case Expression::NUMBER:
	{
	llvm::Type* typConst;

	if (expr.type.isValid()) {
	typConst = l.toLLVMType(pass->man->root->getType(expr));

	} else {
	typConst = llvm::Type::getInt32Ty(llvm::getGlobalContext());
	}

	int literal = expr.getValueDouble();
	return llvm::ConstantInt::get(typConst, literal);
	}

	case Expression::STRING:
	{
	return instructions.compileConstantStringAsPChar(expr.getValueString(), DEFAULT("tmp_str"));
	};

	default:
	{
	break;
	}
	};

	break;

	default: break;

	}

	assert(false && "Can't compile expression");
	return 0;
	}

	llvm::Value*
	BasicCodeScopeUnit::compile(const std::string& hintBlockDecl) {
	if (!hintBlockDecl.empty()) {
	llvm::BasicBlock *block = llvm::BasicBlock::Create(llvm::getGlobalContext(), hintBlockDecl, function->raw);
	pass->man->llvm->builder.SetInsertPoint(block);
	}

	Symbol symbScope = Symbol{ScopedSymbol::RetSymbol, scope};
	return processSymbol(symbScope);
	}

	ICodeScopeUnit::~ICodeScopeUnit() {
	}

	IFunctionUnit::~IFunctionUnit() {
	}

	llvm::Function*
	IFunctionUnit::compile() {
	if (raw != nullptr) return raw;

	LLVMLayer* llvm = pass->man->llvm;
	llvm::IRBuilder<>& builder = llvm->builder;

	string&& functionName = prepareName();
	std::vector<llvm::Type*>&& types = prepareArguments();
	llvm::Type* expectedResultType = prepareResult();

	llvm::FunctionType *ft = llvm::FunctionType::get(expectedResultType, types, false);
	raw = llvm::cast<llvm::Function>(llvm->module->getOrInsertFunction(functionName, ft));
	prepareBindings();

	const std::string&blockName = "entry";
	llvm::BasicBlock* blockCurrent = builder.GetInsertBlock();

	llvm::Value* result = getScopeUnit(function->__entry)->compile(blockName);
	assert(result);

	//SECTIONTAG types/convert function ret value
	builder.CreateRet(typeinference::doAutomaticTypeConversion(result, expectedResultType, llvm->builder));

	if (blockCurrent) {
	builder.SetInsertPoint(blockCurrent);
	}

	llvm->moveToGarbage(ft);
	return raw;
	}

	ICodeScopeUnit*
	IFunctionUnit::getScopeUnit(CodeScope* scope) {
	if (__scopes.count(scope)) {
	auto result = __scopes.at(scope).lock();

	if (result) {
	return result.get();
	}
	}

	std::shared_ptr<ICodeScopeUnit> unit(pass->buildCodeScopeUnit(scope, this));

	if (scope->__parent != nullptr) {
	auto parentUnit = Decorators<CachedScopeDecoratorTag>::getInterface(getScopeUnit(scope->__parent));
	parentUnit->registerChildScope(unit);

	} else {
	__orphanedScopes.push_back(unit);
	}

	if (!__scopes.emplace(scope, unit).second) {
	__scopes[scope] = unit;
	}

	return unit.get();
	}

	ICodeScopeUnit*
	IFunctionUnit::getScopeUnit(ManagedScpPtr scope) {
	return getScopeUnit(&*scope);
	}

	ICodeScopeUnit*
	IFunctionUnit::getEntry() {
	return getScopeUnit(function->getEntryScope());
	}

	template<>
	compilation::IFunctionUnit*
	CompilePassCustomDecorators<void, void>::buildFunctionUnit(const ManagedFnPtr& function){
	return new DefaultFunctionUnit(function, this);
	}

	template<>
	compilation::ICodeScopeUnit*
	CompilePassCustomDecorators<void, void>::buildCodeScopeUnit(CodeScope* scope, IFunctionUnit* function){
	return new DefaultCodeScopeUnit(scope, function, this);
	}

	} // emf of compilation

	IFunctionUnit*
	CompilePass::getFunctionUnit(const ManagedFnPtr& function) {
	unsigned int id = function.id();

	if (!functions.count(id)) {
	IFunctionUnit* unit = buildFunctionUnit(function);
	functions.emplace(id, unit);
	return unit;
	}

	return functions.at(id);
	}

	void
	CompilePass::run() {
	managerTransformations = new TransformationsManager();
	targetInterpretation = new interpretation::TargetInterpretation(this->man->root, this);
	queryContext = reinterpret_cast<context::ContextQuery*> (man->clasp->getQuery(QueryId::ContextQuery));

	//Find out main function;
	ClaspLayer::ModelFragment model = man->clasp->query(Config::get("function-entry"));
	assert(model && "Error: No entry function found");
	assert(model->first != model->second && "Error: Ambiguous entry function");

	string nameMain = std::get<0>(ClaspLayer::parse<std::string>(model->first->second));
	IFunctionUnit* unitMain = getFunctionUnit(man->root->findFunction(nameMain));
	entry = unitMain->compile();
	}

	llvm::Function*
	CompilePass::getEntryFunction() {
	assert(entry);
	return entry;
	}

	void
	CompilePass::prepareQueries(ClaspLayer* clasp) {
	clasp->registerQuery(new containers::Query(), QueryId::ContainersQuery);
	clasp->registerQuery(new context::ContextQuery(), QueryId::ContextQuery);
	}
	} //end of namespace xreate
	diff --git a/cpp/src/pass/interpretationpass.cpp b/cpp/src/pass/interpretationpass.cpp
	index f9a4858..c64f198 100644
	--- a/cpp/src/pass/interpretationpass.cpp
	+++ b/cpp/src/pass/interpretationpass.cpp
	@@ -1,451 +1,461 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	- *
	+ *
	* File: interpretationpass.cpp
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on July 5, 2016, 5:21 PM
	*/

	#include "pass/interpretationpass.h"
	-//#include "compilation/transformations.h"
	#include <compilation/targetinterpretation.h>
	#include <bits/stl_vector.h>
	#include "ast.h"
	//DEBT implement InterpretationPass purely in clasp
	//DEBT represent InterpretationPass as general type inference

	using namespace std;

	namespace xreate{

	template<>
	interpretation::InterpretationResolution
	defaultValue<interpretation::InterpretationResolution>(){
	return interpretation::CMPL_ONLY;
	}

	namespace interpretation{
	enum InterpretationQuery{QUERY_INTR_ONLY, QUERY_CMPL_ONLY};

	namespace details {
	template<InterpretationQuery FLAG_REQUIRED>
	bool checkConstraints(InterpretationResolution flag) {
	return ( (flag==INTR_ONLY && FLAG_REQUIRED == QUERY_INTR_ONLY)
	\|\| (flag==CMPL_ONLY && FLAG_REQUIRED == QUERY_CMPL_ONLY));
	}

	InterpretationResolution
	recognizeTags(const map<std::string, Expression>& tags){
	auto i = tags.find("interpretation");
	if (i== tags.end()){
	return ANY;
	}

	assert(i->second.op == Operator::CALL);
	const string& cmd = i->second.operands.at(0).getValueString();

	//TODO make consistent names of annotation and resolution
	if (cmd == "force"){
	return INTR_ONLY;

	} else if (cmd == "suppress"){
	return CMPL_ONLY;
	}

	return ANY;
	}
	}

	InterpretationResolution
	unify(InterpretationResolution flag) {
	return flag;
	}

	template<typename FLAG_A, typename FLAG_B, typename... FLAGS>
	InterpretationResolution
	unify(FLAG_A flagA, FLAG_B flagB, FLAGS... flags) {

	if (flagA== ANY){
	return unify(flagB, flags...);
	}

	if (flagB == ANY) {
	return unify(flagA, flags...);
	}

	assert(flagA == flagB);
	return flagA;
	}

	template<InterpretationQuery FLAG_REQUIRED>
	bool checkConstraints(std::vector<InterpretationResolution>&& flags) {
	assert(flags.size());

	InterpretationResolution flag = flags.front();
	return details::checkConstraints<FLAG_REQUIRED>(flag);
	}

	template<InterpretationQuery FLAG_REQUIRED_A, InterpretationQuery FLAG_REQUIRED_B, InterpretationQuery... FLAGS>
	bool checkConstraints(std::vector<InterpretationResolution>&& flags) {
	assert(flags.size());

	InterpretationResolution flag = flags.front();
	flags.pop_back();

	if (details::checkConstraints<FLAG_REQUIRED_A>(flag)){
	return checkConstraints<FLAG_REQUIRED_B, FLAGS...>(move(flags));
	}

	return false;
	}

	bool
	InterpretationData::isDefault() const{
	return (resolution == ANY && op == NONE);
	}

	void
	recognizeTags(const Expression& e){
	InterpretationData tag{details::recognizeTags(e.tags), NONE};
	if (!tag.isDefault())
	Attachments::put<InterpretationData>(e, tag);
	}

	InterpretationResolution
	recognizeTags(const ManagedFnPtr& f){
	return details::recognizeTags(f->getTags());
	}

	InterpretationPass::InterpretationPass(PassManager* manager)
	: AbstractPass(manager) {

	Attachments::init<FunctionInterpretationData>();
	Attachments::init<InterpretationData>();
	}

	void InterpretationPass::run(){
	ManagedFnPtr f = man->root->begin<Function>();
	auto& visitedSymbols = getSymbolCache();

	while (f.isValid()) {
	const Symbol& symbolFunction{ScopedSymbol::RetSymbol, f->getEntryScope()};

	if (!visitedSymbols.isCached(symbolFunction)){
	visitedSymbols.setCachedValue(symbolFunction, process(f));
	}

	++f;
	}
	}

	InterpretationResolution
	InterpretationPass::process(const Expression& expression, PassContext context, const std::string& decl){
	recognizeTags(expression);

	InterpretationResolution resolution = ANY;
	InterpretationOperator op = NONE;

	switch (expression.__state){

	case Expression::NUMBER:
	case Expression::STRING: {
	break;
	}

	case Expression::IDENT: {
	resolution = Parent::processSymbol(Attachments::get<Symbol>(expression), context);
	break;
	}

	case Expression::COMPOUND:
	break;

	default: { resolution = CMPL_ONLY; break;}
	}

	if (expression.__state == Expression::COMPOUND)
	switch(expression.op){
	case Operator::EQU:
	case Operator::NE: {
	InterpretationResolution left = process(expression.operands[0], context);
	InterpretationResolution right = process(expression.operands[1], context);

	resolution = unify(left, right);
	break;
	}

	case Operator::LOGIC_AND: {
	assert(expression.operands.size() == 1);
	resolution = process (expression.operands[0], context);
	break;
	}

	case Operator::CALL: {
	//TODO cope with static/dynamic context
	//TODO BUG here: if several variants they all are processed as CMPL careless of signature
	list<ManagedFnPtr> callees = man->root->getFunctionVariants(expression.getValueString());
	if (callees.size()!=1){
	resolution = CMPL_ONLY;
	break;
	}

	ManagedFnPtr callee = callees.front();
	const Symbol& symbCalleeFunc{ScopedSymbol::RetSymbol, callee->getEntryScope()};

	//recursion-aware processing:
	// - skip self recursion
	const Symbol& symbSelfFunc{ScopedSymbol::RetSymbol, context.function->getEntryScope()};
	if (!(symbSelfFunc == symbCalleeFunc)){
	InterpretationResolution resCallee = processFnCall(callee, context);
	assert(resCallee != FUNC_POSTPONED && "Indirect recursion detected: can't decide on interpretation resolution");

	resolution = unify(resolution, resCallee);
	}

	//check arguments compatibility
	const FunctionInterpretationData& calleeSignature = FunctionInterpretationHelper::getSignature(callee);
	for (size_t op=0, size = expression.operands.size(); op < size; ++op){
	const Expression &operand = expression.operands[op];
	InterpretationResolution argActual = process(operand, context);
	InterpretationResolution argExpected = calleeSignature.signature[op];

	//TODO use args unification result to properly process function call
	unify(argActual, argExpected);
	}

	if (FunctionInterpretationHelper::needPartialInterpretation(callee)){
	op= CALL_INTERPRET_PARTIAL;
	}

	break;
	}

	+ case Operator::CALL_INTRINSIC: {
	+ std::string nameFunction = expression.getValueString();
	+
	+ if (nameFunction == "query") {
	+ resolution = INTR_ONLY;
	+
	+ } else {
	+ resolution = CMPL_ONLY;
	+ }
	+ break;
	+ }
	+
	case Operator::IF:{
	InterpretationResolution flagCondition = process(expression.getOperands()[0], context);
	InterpretationResolution flagScope1 = Parent::process(expression.blocks.front(), context);
	InterpretationResolution flagScope2 = Parent::process(expression.blocks.back(), context);

	//special case: IF_INTERPRET_CONDITION
	if (checkConstraints<QUERY_INTR_ONLY>({flagCondition})){
	op= IF_INTERPRET_CONDITION;
	flagCondition = ANY;
	}

	resolution = unify(flagCondition, flagScope1, flagScope2);
	break;
	}

	case Operator::FOLD: {
	InterpretationResolution flagInput = process(expression.getOperands()[0], context);
	InterpretationResolution flagAccumInit = process(expression.getOperands()[1], context);

	CodeScope* scopeBody = expression.blocks.front();
	const std::string& nameEl = expression.bindings[0];
	Symbol symbEl{ScopedSymbol{scopeBody->__identifiers.at(nameEl), versions::VERSION_NONE}, scopeBody};
	getSymbolCache().setCachedValue(symbEl, InterpretationResolution(flagInput));

	const std::string& nameAccum = expression.bindings[1];
	Symbol symbAccum{ScopedSymbol{scopeBody->__identifiers.at(nameAccum), versions::VERSION_NONE}, scopeBody};
	getSymbolCache().setCachedValue(symbAccum, InterpretationResolution(flagAccumInit));

	InterpretationResolution flagBody = Parent::process(expression.blocks.front(), context);

	//special case: FOLD_INTERPRET_INPUT
	if (checkConstraints<QUERY_INTR_ONLY>({flagInput})){
	op= FOLD_INTERPRET_INPUT;
	flagInput = ANY;
	}

	resolution = unify(flagInput, flagAccumInit, flagBody);
	break;
	}

	case Operator::INDEX: {
	- resolution = unify(
	- process(expression.operands[0], context),
	- process(expression.operands[1], context)
	- );
	+ for (const Expression &op: expression.getOperands()) {
	+ resolution = unify(resolution, process(op, context));
	+ }

	break;
	}

	case Operator::SWITCH: {
	InterpretationResolution flagCondition = process(expression.operands[0], context);
	bool hasDefaultCase = expression.operands[1].op == Operator::CASE_DEFAULT;


	//determine conditions resolution
	InterpretationResolution flagHeaders = flagCondition;
	for (size_t size = expression.operands.size(), i= hasDefaultCase? 2: 1; i<size; ++i){
	const Expression& exprCase = expression.operands[i];

	flagHeaders = unify(flagHeaders, Parent::process(exprCase.blocks.front(), context));
	}

	if (checkConstraints<QUERY_INTR_ONLY>({flagHeaders})){
	op= SWITCH_INTERPRET_CONDITION;
	flagHeaders = ANY;
	}

	//determine body resolutions
	resolution = flagHeaders;
	for (size_t size = expression.operands.size(), i= 1; i<size; ++i){
	const Expression& exprCase = expression.operands[i];

	resolution = unify(resolution, Parent::process(exprCase.blocks.back(), context));
	}

	break;
	}

	case Operator::SWITCH_VARIANT: {
	InterpretationResolution resolutionCondition = process(expression.operands.at(0), context);
	resolution= resolutionCondition;

	if (checkConstraints<QUERY_INTR_ONLY>({resolution})){
	op= SWITCH_VARIANT;
	resolution = ANY;
	}

	const string identCondition = expression.bindings.front();
	for(auto scope: expression.blocks){
	//set binding resolution
	ScopedSymbol symbolInternal = scope->getSymbol(identCondition);
	getSymbolCache().setCachedValue(Symbol{symbolInternal, scope}, InterpretationResolution(resolutionCondition));

	resolution = unify(resolution, Parent::process(scope, context));
	}

	for(auto scope: expression.blocks){
	resolution = unify(resolution, Parent::process(scope, context));
	}
	break;
	}

	case Operator::LIST:
	case Operator::LIST_NAMED: {
	for (const Expression &op: expression.getOperands()) {
	resolution = unify(resolution, process(op, context));
	}

	break;
	}

	case Operator::VARIANT: {
	if(expression.getOperands().size()){
	resolution = process(expression.getOperands().front(), context);
	} else {
	resolution = ANY;
	}

	break;
	}

	default: {
	resolution = CMPL_ONLY;

	for (const Expression &op: expression.getOperands()) {
	process(op, context);
	}

	for (CodeScope* scope: expression.blocks) {
	Parent::process(scope, context);
	}

	break;
	}
	}

	InterpretationResolution resolutionExpected =
	Attachments::get<InterpretationData>(expression, {ANY, NONE}).resolution;

	resolution = unify(resolution, resolutionExpected);
	if (resolution != resolutionExpected && (op!=NONE \|\| resolution == INTR_ONLY)){
	Attachments::put<InterpretationData>(expression, {resolution, op});
	}

	return resolution;
	}

	InterpretationResolution
	InterpretationPass::processFnCall(ManagedFnPtr function, PassContext context){
	return process(function);
	}

	InterpretationResolution
	InterpretationPass::process(ManagedFnPtr function){
	CodeScope* entry = function->getEntryScope();
	std::vector<std::string> arguments = entry->__bindings;
	const Symbol& symbSelfFunc{ScopedSymbol::RetSymbol, function->getEntryScope()};
	auto& cache = getSymbolCache();

	if (cache.isCached(symbSelfFunc))
	return cache.getCachedValue(symbSelfFunc);

	const FunctionInterpretationData& fnSignature = FunctionInterpretationHelper::getSignature(function);
	InterpretationResolution fnResolutionExpected = details::recognizeTags(function->getTags());

	//mark preliminary function resolution as expected
	if (fnResolutionExpected != ANY){
	cache.setCachedValue(symbSelfFunc, move(fnResolutionExpected));

	} else {
	// - in order to recognize indirect recursion mark this function resolution as POSTPONED
	cache.setCachedValue(symbSelfFunc, FUNC_POSTPONED);
	}

	//set resolution for function arguments as expected
	for (int argNo = 0, size = arguments.size(); argNo< size; ++argNo){
	Symbol symbArg{ScopedSymbol{entry->__identifiers.at(arguments[argNo]), versions::VERSION_NONE}, entry};
	cache.setCachedValue(symbArg, InterpretationResolution(fnSignature.signature[argNo]));
	}

	PassContext context;
	context.function = function;
	context.scope = entry;
	InterpretationResolution resActual = process(CodeScope::getDeclaration(symbSelfFunc), context);
	resActual = unify(resActual, fnResolutionExpected);
	return cache.setCachedValue(symbSelfFunc, move(resActual));
	}

	const FunctionInterpretationData
	FunctionInterpretationHelper::getSignature(ManagedFnPtr function){
	if (Attachments::exists<FunctionInterpretationData>(function)){
	return Attachments::get<FunctionInterpretationData>(function);
	}

	FunctionInterpretationData&& data = recognizeSignature(function);
	Attachments::put<FunctionInterpretationData>(function, data);
	return data;
	}

	FunctionInterpretationData
	FunctionInterpretationHelper::recognizeSignature(ManagedFnPtr function){
	CodeScope* entry = function->__entry;
	FunctionInterpretationData result;
	result.signature.reserve(entry->__bindings.size());

	bool flagPartialInterpretation = false;
	for(size_t no=0, size=entry->__bindings.size(); no < size; ++no){
	const std::string& argName = entry->__bindings[no];
	Symbol symbArg{ScopedSymbol{entry->__identifiers.at(argName), versions::VERSION_NONE}, entry};

	const Expression& arg = CodeScope::getDeclaration(symbArg);

	InterpretationResolution argResolution = details::recognizeTags(arg.tags);
	flagPartialInterpretation \|= (argResolution == INTR_ONLY);

	result.signature.push_back(argResolution);
	}
	result.flagPartialInterpretation = flagPartialInterpretation;
	return result;
	}

	bool FunctionInterpretationHelper::needPartialInterpretation(ManagedFnPtr function){
	const FunctionInterpretationData& data = getSignature(function);
	return data.flagPartialInterpretation;
	}
	}} //end of namespace xreate::interpretation

	diff --git a/cpp/src/pass/interpretationpass.h b/cpp/src/pass/interpretationpass.h
	index e2935fa..1e2a54a 100644
	--- a/cpp/src/pass/interpretationpass.h
	+++ b/cpp/src/pass/interpretationpass.h
	@@ -1,90 +1,91 @@
	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* File: interpretationpass.h
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on July 5, 2016, 5:21 PM
	*/

	#ifndef INTERPRETATIONPASS_H
	#define INTERPRETATIONPASS_H

	#include "abstractpass.h"
	#include <map>

	+
	#ifndef FRIENDS_INTERPRETATION_TESTS
	#define FRIENDS_INTERPRETATION_TESTS
	#endif

	//TODO refactor interpretation. Get rid of InterpretationOperator, put only one operator - Hybrid.

	namespace xreate{ namespace interpretation{
	enum InterpretationResolution{ANY, INTR_ONLY, CMPL_ONLY, FUNC_POSTPONED};
	enum InterpretationOperator{NONE, IF_INTERPRET_CONDITION, FOLD_INTERPRET_INPUT, SWITCH_INTERPRET_CONDITION, SWITCH_VARIANT, CALL_INTERPRET_PARTIAL};

	struct InterpretationData{
	InterpretationResolution resolution;
	InterpretationOperator op;

	bool isDefault() const;
	};

	struct FunctionInterpretationData{
	typedef std::vector<InterpretationResolution> Signature;
	Signature signature;
	bool flagPartialInterpretation;
	};

	class FunctionInterpretationHelper {
	public:
	static const FunctionInterpretationData
	getSignature(ManagedFnPtr function);

	static bool needPartialInterpretation(ManagedFnPtr function);

	private:
	static FunctionInterpretationData recognizeSignature(ManagedFnPtr function);
	};

	class InterpretationPass: public AbstractPass<InterpretationResolution> {
	typedef AbstractPass<InterpretationResolution> Parent;

	public:
	InterpretationResolution process(const Expression& expression, PassContext context, const std::string& varDecl="") override;
	InterpretationResolution process(ManagedFnPtr function);
	InterpretationResolution processFnCall(ManagedFnPtr function, PassContext context);

	InterpretationPass(PassManager* manager);
	void run();
	};

	namespace details {
	InterpretationResolution recognizeTags(const std::map<std::string, Expression>& tags);
	}
	} //end of namespace interpretation

	template<>
	interpretation::InterpretationResolution
	defaultValue<interpretation::InterpretationResolution>();

	template<>
	struct AttachmentsDict<interpretation::FunctionInterpretationData>
	{
	typedef interpretation::FunctionInterpretationData Data;
	static const unsigned int key = 5;
	};

	template<>
	struct AttachmentsDict<interpretation::InterpretationData>
	{
	typedef interpretation::InterpretationData Data;
	static const unsigned int key = 3;
	};

	} //end of namespace xreate


	#endif /* INTERPRETATIONPASS_H */

	diff --git a/cpp/tests/CMakeLists.txt b/cpp/tests/CMakeLists.txt
	index 8611af2..0c4b850 100644
	--- a/cpp/tests/CMakeLists.txt
	+++ b/cpp/tests/CMakeLists.txt
	@@ -1,51 +1,52 @@
	cmake_minimum_required(VERSION 2.8.11)
	project(xreate-tests)

	find_package(GTest REQUIRED)
	INCLUDE_DIRECTORIES(${GTEST_INCLUDE_DIRS})
	INCLUDE_DIRECTORIES("/usr/include/libxml2")
	INCLUDE_DIRECTORIES($<TARGET_PROPERTY:xreate,INCLUDE_DIRECTORIES>)


	# TESTS
	#=========================
	FIND_PACKAGE (LLVM REQUIRED)
	message("LLVM_LIBRARY_DIRS: " ${LLVM_LIBRARY_DIRS})
	link_directories(${LLVM_LIBRARY_DIRS})

	set (LIBCLASP_PATH ${POTASSCO_PATH}/build/debug)
	link_directories(${LIBCLASP_PATH})

	#aux_source_directory(. TEST_FILES)
	set(TEST_FILES
	+ association.cpp
	main.cpp
	modules.cpp
	adhoc.cpp
	attachments.cpp
	ast.cpp
	cfa.cpp
	dfa.cpp
	compilation.cpp
	ExpressionSerializer.cpp
	externc.cpp
	context.cpp
	types.cpp
	vendorAPI/clangAPI.cpp
	vendorAPI/xml2.cpp
	vendorAPI/json.cpp

	containers.cpp
	context.cpp
	interpretation.cpp
	loops.cpp

	#supplemental/versions-algorithm-data_dependency.cpp
	effects-versions.cpp
	)

	add_executable(${PROJECT_NAME} ${TEST_FILES})
	target_link_libraries(${PROJECT_NAME} xreate ${GTEST_LIBRARIES} pthread xml2 gcov)

	add_custom_target (coverage
	COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/src/code-coverage.sh
	WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
	diff --git a/cpp/tests/ExpressionSerializer.cpp b/cpp/tests/ExpressionSerializer.cpp
	index 58cf5ae..bc940f0 100644
	--- a/cpp/tests/ExpressionSerializer.cpp
	+++ b/cpp/tests/ExpressionSerializer.cpp
	@@ -1,67 +1,68 @@
	/* Any copyright is dedicated to the Public Domain.
	* http://creativecommons.org/publicdomain/zero/1.0/
	- *
	+ *
	* testExpressionSerializer.cpp
	*
	* Created on: Jan 4, 2016
	* Author: pgess <v.melnychenko@xreate.org>
	*/

	#include "aux/serialization/expressionserializer.h"
	#include "serialization.h"
	#include "ast.h"
	#include "gtest/gtest.h"

	using namespace xreate;
	using namespace std;

	TEST(ExpressionSerializer, pack1){
	PackedExpression x;

	x << std::make_pair(0xA1, 0x100);
	size_t* storage = reinterpret_cast<size_t> (x);
	ASSERT_EQ(0xA100000000000000, *storage);

	x << std::make_pair(0x23456, 0x100000);
	ASSERT_EQ(0xA123456000000000, *storage);

	x << std::make_pair(0x7654321, 0x10000000);
	ASSERT_EQ(0xA123456765432100, *storage);


	x << std::make_pair(0xABBA, 0x10000);
	storage = reinterpret_cast<size_t> (x);
	ASSERT_EQ(0xA1234567654321AB, *storage);
	ASSERT_EQ(0xBA00000000000000, *(storage+1));
	}

	TEST(ExpressionSerializer, serialize1){
	- Expression a(Operator::CALL, {Expression(string("a")), Expression(string("a"))});
	- Expression b(Operator::CALL, {Expression(string("a")), Expression(string("b"))});
	+
	+ Expression a(Operator::CALL, {Atom<Identifier_t>("a"), Atom<Identifier_t>("a")});
	+ Expression b(Operator::CALL, {Atom<Identifier_t>("a"), Atom<Identifier_t>("b")});

	ExpressionSerializer serializer(vector<Expression>{a, b});

	PackedExpression packA = serializer.getId(a);
	PackedExpression packB = serializer.getId(b);
	PackedExpression packA2 = serializer.getId(a);

	ASSERT_EQ(packA, packA2);
	ASSERT_NE(packA, packB);
	}

	TEST(ExpressionSerializer, serialize2){
	- Expression a(Operator::CALL, {Expression(string("a")), Expression(string("a"))});
	- Expression b(Operator::CALL, {Expression(string("a")), Expression(string("b"))});
	+ Expression a(Operator::CALL, {Atom<Identifier_t>("a"), Atom<Identifier_t>("a")});
	+ Expression b(Operator::CALL, {Atom<Identifier_t>("a"), Atom<Identifier_t>("b")});
	Expression c(Atom<Identifier_t>("c"));

	typedef ExpressionSerialization<RequirementIntegralCode>::Serializer Serializer;
	Serializer serializer(vector<Expression>{a, b});

	ASSERT_EQ(2, serializer.size());
	ASSERT_EQ(1, serializer.count(a));
	ASSERT_EQ(1, serializer.count(b));
	ASSERT_EQ(0, serializer.count(c));

	Serializer serializer2(move(serializer));
	ASSERT_EQ(1, serializer2.count(a));
	}
	diff --git a/cpp/tests/association.cpp b/cpp/tests/association.cpp
	new file mode 100644
	index 0000000..b243f67
	--- /dev/null
	+++ b/cpp/tests/association.cpp
	@@ -0,0 +1,100 @@
	+/* Any copyright is dedicated to the Public Domain.
	+ * http://creativecommons.org/publicdomain/zero/1.0/
	+ *
	+ * association.cpp
	+ *
	+ * Author: pgess <v.melnychenko@xreate.org>
	+ * Created on August 12, 2017, 9:28 PM
	+ */
	+#include "xreatemanager.h"
	+#include "clasplayer.h"
	+#include <gtest/gtest.h>
	+
	+using namespace xreate;
	+using namespace std;
	+
	+TEST(Association, test1){
	+std::string controller=
	+R"Code(
	+ program(add).
	+)Code";
	+
	+std::string script=
	+R"Code(
	+Annotation = type variant {
	+ Num:: int,
	+ String:: string,
	+ Func:: {name::string, arguments::[Annotation]}
	+}.
	+
	+extractCmd = function(program::Annotation):: Annotation; interpretation(force){
	+ switch variant(program)::Annotation
	+ case (Num){String("wrong expression")}
	+ case (String){String("wrong expression")}
	+ case (Func){program["arguments"][0]}
	+}
	+
	+main= function:: int; entry{
	+ x= 5::int.
	+ y = 6::int.
	+
	+ program = intrinsic query("program")[0]::Annotation.
	+ cmd = extractCmd(program)::Annotation; interpretation(force).
	+
	+ answer = switch variant(cmd)::int
	+ case (Num) {0}
	+ case (String){0}
	+ case (Func){
	+ switch(cmd["name"])::int
	+ case("add"){x + y}
	+ case default {0}
	+ }.
	+
	+ answer
	+}
	+)Code";
	+
	+ std::unique_ptr<XreateManager> man(XreateManager::prepare(std::move(script)));
	+ man->clasp->addRawScript(move(controller));
	+ int (main)() = (int ()())man->run();
	+ int result = main();
	+
	+ ASSERT_EQ(11, result);
	+}
	+
	+
	+//std::string script=
	+//R"Code(
	+//
	+//case context:: test1 {
	+//test= function::bool; registerTest {
	+// x = 8:: int.
	+//
	+// x == 8
	+//}}
	+//
	+//case context:: test2{
	+//test= function::bool{
	+// x = 3::int.
	+// y = 12::int.,
	+//
	+// (x+y) <> 25
	+//}}
	+//
	+//runTests= function::bool{
	+// tests = intrinsic query (registeredTests)::[Expression].
	+//
	+// loop fold(tests->test::Expression, true->result):: bool {
	+// shot = {
	+// context:: make context (test)
	+// test()
	+// }
	+//
	+// result and shot
	+// }
	+//}
	+//
	+//main= function:: int; entry{
	+// runTests()
	+//}
	+//)Code";
	diff --git a/cpp/tests/interpretation.cpp b/cpp/tests/interpretation.cpp
	index 9ac23ef..9af16a9 100644
	--- a/cpp/tests/interpretation.cpp
	+++ b/cpp/tests/interpretation.cpp
	@@ -1,447 +1,468 @@
	/* Any copyright is dedicated to the Public Domain.
	* http://creativecommons.org/publicdomain/zero/1.0/
	- *
	+ *
	* interpretation.cpp
	*
	* Created on: -
	* Author: pgess <v.melnychenko@xreate.org>
	*/

	#include "attachments.h"

	using namespace xreate;

	#include "xreatemanager.h"
	#include "compilation/targetinterpretation.h"

	#include "gtest/gtest.h"
	#include "boost/scoped_ptr.hpp"

	//#define FRIENDS_INTERPRETATION_TESTS \
	// friend class ::Modules_AST2_Test; \
	// friend class ::Modules_Discovery1_Test; \
	// friend class ::Modules_Solve1_Test;

	#include "pass/interpretationpass.h"

	using namespace xreate::grammar::main;
	using namespace xreate::interpretation;

	TEST(Interpretation, Analysis_StatementIF_1){
	XreateManager* man = XreateManager::prepare(

	R"Code(
	main = function::bool {
	x = "a":: string.

	y = if (x=="b"):: bool; interpretation(force) {
	true

	} else {
	false
	}.

	y
	}
	)Code" );

	InterpretationPass* pass = new InterpretationPass(man);
	pass->run();

	CodeScope* scopeEntry = man->root->findFunction("main")->getEntryScope();
	Symbol symbolY{scopeEntry->getSymbol("y"), scopeEntry};
	InterpretationData& dataSymbolY = Attachments::get<InterpretationData>(symbolY);

	ASSERT_EQ(INTR_ONLY, dataSymbolY.resolution);
	}

	TEST(Interpretation, Compilation_StatementIF_1){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(

	R"Code(
	main = function::int; entry {
	x = "a":: string.

	y = if (x=="b"):: string; interpretation(force) {
	1

	} else {
	0
	}.

	y
	}
	)Code" );

	man->analyse();

	InterpretationPass* pass;
	if (man->isPassRegistered(PassId::InterpretationPass)){
	pass = (InterpretationPass*) man->getPassById(PassId::InterpretationPass);
	} else {
	pass = new InterpretationPass(man);
	pass->run();
	}


	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(0, result);
	}

	TEST(Interpretation, Analysis_StatementIF_InterpretCondition_1){
	XreateManager* man = XreateManager::prepare(

	R"Code(
	main = function(x:: int):: int {
	comm= "inc":: string; interpretation(force).

	y = if (comm == "inc")::int {x+1} else {x}.
	y
	}
	)Code" );

	InterpretationPass* pass = new InterpretationPass(man);
	pass->run();

	CodeScope* scopeEntry = man->root->findFunction("main")->getEntryScope();
	Symbol symbolY{scopeEntry->getSymbol("y"), scopeEntry};
	InterpretationData& dataSymbolY = Attachments::get<InterpretationData>(symbolY);

	ASSERT_EQ(CMPL_ONLY, dataSymbolY.resolution);
	ASSERT_EQ(IF_INTERPRET_CONDITION, dataSymbolY.op);
	}

	TEST(Interpretation, Compilation_StatementIF_InterpretCondition_1){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(

	R"Code(
	main = function(x:: int):: int; entry {
	comm= "inc":: string; interpretation(force).

	y = if (comm == "inc")::int {x+1} else {x}.
	y
	}
	)Code" );

	man->analyse();

	InterpretationPass* pass;
	if (man->isPassRegistered(PassId::InterpretationPass)){
	pass = (InterpretationPass*) man->getPassById(PassId::InterpretationPass);
	} else {
	pass = new InterpretationPass(man);
	pass->run();
	}

	int (main)(int) = (int ()(int))man->run();
	int result = main(1);

	ASSERT_EQ(2, result);
	}

	TEST(Interpretation, Compilation_StatementFOLD_INTERPRET_INPUT_1){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(

	R"Code(
	main = function(x:: int):: int; entry {
	commands = ["inc", "double", "dec"]:: [string]; interpretation(force).

	loop fold(commands->comm::string, x->operand):: int{
	switch(comm)::int

	case ("inc"){
	operand + 1
	}

	case ("dec"){
	operand - 1
	}

	case ("double"){
	operand * 2
	}
	}
	}
	)Code" );

	man->analyse();

	InterpretationPass* pass;
	if (man->isPassRegistered(PassId::InterpretationPass)){
	pass = (InterpretationPass*) man->getPassById(PassId::InterpretationPass);
	} else {
	pass = new InterpretationPass(man);
	pass->run();
	}

	const ManagedFnPtr& funcMain = man->root->findFunction("main");
	InterpretationData& dataBody = Attachments::get<InterpretationData>(funcMain);
	ASSERT_EQ(FOLD_INTERPRET_INPUT, dataBody.op);

	int (main)(int) = (int ()(int))man->run();
	int result = main(10);

	ASSERT_EQ(21, result);
	}

	TEST(Interpretation, StatementCall_RecursionNo_1){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(
	R"Code(
	unwrap = function(data::undef, keys::undef):: undef; interpretation(force){
	loop fold(keys->key::string, data->a):: undef {
	a[key]
	}
	}

	start = function::num; entry{
	result = unwrap(
	{
	a = {
	b =
	{
	c = "core"
	}
	}
	}, ["a", "b", "c"])::undef.

	result == "core"
	}
	)Code" );

	man->analyse();

	InterpretationPass* pass;
	if (man->isPassRegistered(PassId::InterpretationPass)){
	pass = (InterpretationPass*) man->getPassById(PassId::InterpretationPass);
	} else {
	pass = new InterpretationPass(man);
	pass->run();
	}

	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(1, result);
	}

	TEST(Interpretation, StatementCall_RecursionDirect_1){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(
	R"Code(
	unwrap = function(data:: X):: Y {
	if (data[0] == "a")::Y {0} else {unwrap(data[0])}
	}

	entry = function:: i8; entry {
	unwrap([[[["a"]]]]):: i8; interpretation(force)
	}
	)Code" );

	man->analyse();

	InterpretationPass* pass;
	if (man->isPassRegistered(PassId::InterpretationPass)){
	pass = (InterpretationPass*) man->getPassById(PassId::InterpretationPass);
	} else {
	pass = new InterpretationPass(man);
	pass->run();
	}

	InterpretationResolution resolutionActual = pass->process(man->root->findFunction("unwrap"));
	ASSERT_EQ(ANY, resolutionActual);

	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(0, result);
	}

	TEST(Interpretation, StatementCall_RecursionIndirect_1){
	XreateManager* man = XreateManager::prepare(
	R"Code(
	funcA = function(data:: X):: Y {
	if (data == "a")::Y {0} else {funcB(data)}
	}

	funcB = function(data:: X):: Y {
	if (data == "b")::Y {1} else {funcA(data)}
	}

	entry = function:: i8; entry {
	funcA(""):: i8; interpretation(force)
	}
	)Code" );

	InterpretationPass* pass = new InterpretationPass(man);
	ASSERT_DEATH(pass->run(), "Indirect recursion detected");
	}

	TEST(Interpretation, PartialIntr_1){
	XreateManager* man = XreateManager::prepare(
	R"Code(
	evaluate= function(argument:: num, code:: string; interpretation(force)):: num {
	switch(code)::int
	case ("inc") {argument + 1}
	case ("dec") {argument - 1}
	case ("double") {argument * 2}
	}

	main = function::int; entry {
	commands= ["inc", "double", "dec"]:: [string]; interpretation(force).

	loop fold(commands->comm::string, 10->operand):: int{
	evaluate(operand, comm)
	}
	}
	)Code" );

	InterpretationPass* pass = new InterpretationPass(man);
	pass->run();

	ManagedFnPtr fnEvaluate = man->root->findFunction("evaluate");
	InterpretationResolution resFnEvaluate= pass->process(fnEvaluate);
	ASSERT_EQ(CMPL_ONLY, resFnEvaluate);
	ASSERT_TRUE(FunctionInterpretationHelper::needPartialInterpretation(fnEvaluate));

	const Expression& exprLoop = man->root->findFunction("main")->__entry->getBody();
	Symbol symbCallEv{{0, versions::VERSION_NONE}, exprLoop.blocks.front()};
	InterpretationData dataCallEv = Attachments::get<InterpretationData>(symbCallEv);
	ASSERT_EQ(CMPL_ONLY, dataCallEv.resolution);
	ASSERT_EQ(CALL_INTERPRET_PARTIAL, dataCallEv.op);
	}

	TEST(Interpretation, Compilation_PartialIntr_2){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(
	R"Code(
	evaluate= function(argument:: num, code:: string; interpretation(force)):: num {
	switch(code)::int
	case ("inc") {argument + 1}
	case ("dec") {argument - 1}
	case ("double") {argument * 2}
	case default {argument}
	}

	main = function::int; entry {
	commands= ["inc", "double", "dec"]:: [string]; interpretation(force).

	loop fold(commands->comm::string, 10->operand):: int{
	evaluate(operand, comm)
	}
	}
	)Code" );

	man->analyse();
	if (!man->isPassRegistered(PassId::InterpretationPass)){
	InterpretationPass* pass = new InterpretationPass(man);
	pass->run();
	}

	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(21, result);
	}

	TEST(Interpretation, PartialIntr_3){
	xreate::details::tier1::XreateManager* man = xreate::details::tier1::XreateManager::prepare(
	R"Code(
	Command= type variant {INC, DEC, DOUBLE}.

	evaluate= function(argument:: num, code:: Command; interpretation(force)):: num {
	switch variant(code)::int
	case (INC) {argument + 1}
	case (DEC) {argument - 1}
	case (DOUBLE) {argument * 2}
	}

	main = function::int; entry {
	commands= [INC(), DOUBLE(), DEC()]:: [Command]; interpretation(force).

	loop fold(commands->comm::Command, 10->operand):: int{
	evaluate(operand, comm)
	}
	}
	)Code" );

	man->analyse();
	if (!man->isPassRegistered(PassId::InterpretationPass)){
	InterpretationPass* pass = new InterpretationPass(man);
	pass->run();
	}

	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(21, result);
	}

	TEST(Interpretation, SwitchVariant){
	xreate::XreateManager* man = xreate::XreateManager::prepare(
	R"Code(
	OneArgument = type{x::int}.
	TWoArgument = type {x::int, y::int}.

	Command= type variant {
	ADD::TwoArguments,
	DEC:: OneArgument,
	DOUBLE::OneArgument
	}.

	main = function::int; entry{
	program = ADD({x=2, y=3})::Command; interpretation(force).

	switch variant(program)::int
	case (ADD) {program["x"]+program["y"]}
	case (DEC) {1}
	case (DOUBLE) {2}
	}
	)Code" );

	int (main)() = (int ()())man->run();
	int result = main();
	ASSERT_EQ(5, result);

	}

	TEST(Interpretation, SwitchVariantAlias){
	xreate::XreateManager* man = xreate::XreateManager::prepare(
	R"Code(
	OneArgument = type{x::int}.
	TWoArgument = type {x::int, y::int}.

	Command= type variant {
	ADD::TwoArguments,
	DEC:: OneArgument,
	DOUBLE::OneArgument
	}.

	main = function::int; entry{
	- program = [ADD({x=2, y=3}), DEC({x=8})]::Command; interpretation(force).
	+ program = [ADD({x=2, y=3}), DEC({x=8})]::[Command]; interpretation(force).

	- switch variant(program[0]->program)::int
	+ switch variant(program[0]->program::Command)::int
	case (ADD) {program["x"]+program["y"]}
	case (DEC) {1}
	case (DOUBLE) {2}
	}
	)Code" );

	int (main)() = (int ()())man->run();
	int result = main();
	ASSERT_EQ(5, result);
	}

	+TEST(Interpretation, Multiindex1){
	+ std::string script2=
	+R"Code(
	+ extract = function(program::undef)::int; interpretation(force){
	+ program["arguments"][1]
	+ }
	+
	+ main = function::int; entry {
	+ x = {arguments = [10, 9, 8, 7]}:: undef; interpretation(force).
	+ extract(x)
	+ }
	+)Code";
	+
	+ std::unique_ptr<XreateManager> man(XreateManager::prepare(std::move(script2)));
	+
	+ int (main)() = (int ()())man->run();
	+ int result = main();
	+
	+ ASSERT_EQ(9, result);
	+}
	+
	TEST(InterpretationExamples, Regexp1){
	FILE* input = fopen("scripts/dsl/regexp.xreate","r");
	assert(input != nullptr);

	std::unique_ptr<XreateManager> man(XreateManager::prepare(input));

	int (main)() = (int ()())man->run();
	int result = main();

	ASSERT_EQ(4, result);
	}

	//TOTEST call indirect recursion(w/o tags)
	//TASk implement and test Loop Inf (fix acc types in coco grammar)
	diff --git a/cpp/tests/types.cpp b/cpp/tests/types.cpp
	index 991f55e..a7493d3 100644
	--- a/cpp/tests/types.cpp
	+++ b/cpp/tests/types.cpp
	@@ -1,181 +1,181 @@
	/* Any copyright is dedicated to the Public Domain.
	* http://creativecommons.org/publicdomain/zero/1.0/
	- *
	+ *
	* types.cpp
	*
	* Created on: Jun 4, 2015
	* Author: pgess <v.melnychenko@xreate.org>
	*/

	#include "gtest/gtest.h"
	#include "xreatemanager.h"
	#include "llvmlayer.h"
	#include "main/Parser.h"

	using namespace std;
	using namespace xreate;
	using namespace xreate::grammar::main;

	TEST(Types, DependantTypes1) {
	string&& code = "XmlNode = type {\n"
	" tag:: string,\n"
	" attrs:: [string], \n"
	" content:: string\n"
	"}.\n";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(code)));
	ExpandedType typeXmlNode = program->root->findType("XmlNode");

	ASSERT_EQ(TypeOperator::STRUCT, typeXmlNode->__operator);
	ASSERT_EQ(3, typeXmlNode->__operands.size());
	ASSERT_EQ(TypePrimitive::String, typeXmlNode->__operands.at(0).__value);
	ASSERT_EQ(TypeOperator::ARRAY, typeXmlNode->__operands.at(1).__operator);
	ASSERT_EQ(TypePrimitive::String, typeXmlNode->__operands.at(2).__value);
	}

	TEST(Types, ast_ParameterizedTypes_FeatureTypeIndex_1) {
	string&& code = "XmlNode = type {\n"
	" tag:: string,\n"
	" attrs:: [string],\n"
	" content:: string\n"
	"}.\n"
	""
	"Template = type(Leaf) {Leaf, [Leaf[content]]}."
	"Concrete = type Template(XmlNode).";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(code)));
	ExpandedType typeConcrete = program->root->findType("Concrete");

	ASSERT_EQ(TypeOperator::STRUCT, typeConcrete->__operator);
	ASSERT_EQ(2, typeConcrete->__operands.size());
	ASSERT_EQ(TypeOperator::STRUCT, typeConcrete->__operands.at(0).__operator);

	ASSERT_EQ(TypeOperator::ARRAY, typeConcrete->__operands.at(1).__operator);
	ASSERT_EQ(TypePrimitive::String, typeConcrete->__operands.at(1).__operands.at(0).__value);
	}

	TEST(Types, TreeType1) {
	string&& code = "XmlNode = type {\n"
	" tag:: string,\n"
	" attrs:: [string],\n"
	" content:: string\n"
	"}.\n"
	""
	"Tree = type(Leaf) {Leaf, [Tree(Leaf)]}."
	"Concrete = type Tree(XmlNode).";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(code)));
	ExpandedType typeConcrete = program->root->findType("Concrete");

	ASSERT_EQ(TypeOperator::STRUCT, typeConcrete->__operator);
	ASSERT_EQ(2, typeConcrete->__operands.size());
	ASSERT_EQ(TypeOperator::STRUCT, typeConcrete->__operands.at(0).__operator);

	ASSERT_EQ(TypeOperator::ARRAY, typeConcrete->__operands.at(1).__operator);

	auto typeLink = typeConcrete->__operands.at(1).__operands.at(0);
	ASSERT_EQ(TypeOperator::LINK, typeLink.__operator);
	ASSERT_EQ(typeConcrete->conjuctionId,typeLink.conjuctionId);
	}

	TEST(Types, TreeType1LLvm){
	string&& code = "XmlNode = type {\n"
	" tag:: string,\n"
	" /* attrs:: [string],*/\n"
	" content:: string\n"
	"}.\n"
	""
	"Tree = type(Leaf) {Leaf, [Tree(Leaf)]}."
	"Concrete = type Tree(XmlNode).";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(code)));
	ExpandedType typeConcrete = program->root->findType("Concrete");

	llvm::Type* raw = program->llvm->toLLVMType(typeConcrete);
	}

	TEST(Types, ArrayOfExternal1){
	FILE* input = fopen("scripts/containers/Containers_Implementation_LinkedList1.xreate","r");
	assert(input != nullptr);

	Scanner scanner(input);
	Parser parser(&scanner);

	parser.Parse();
	AST* ast = parser.root->finalize();

	CodeScope* body = ast->findFunction("test")->getEntryScope();

	const ExpandedType& t2 = ast->getType(body->getDeclaration(body->getSymbol("childrenRaw")));
	EXPECT_EQ(t2->__operator, TypeOperator::ARRAY);
	}

	TEST(Types, ExternType1){
	FILE* input = fopen("scripts/containers/Containers_Implementation_LinkedList1.xreate","r");
	assert(input != nullptr);

	Scanner scanner(input);
	Parser parser(&scanner);
	parser.Parse();

	AST* ast = parser.root->finalize();
	CodeScope* body = ast->findFunction("test")->getEntryScope();

	const ExpandedType& t2 = ast->getType(body->getDeclaration(body->getSymbol("tree")));
	EXPECT_EQ(t2->__operator, TypeOperator::CUSTOM);
	}

	TEST(Types, ast_VariantType1){
	string&& code =
	" colors = type variant {RED, BLUE, GREEN}.\n"
	" test = function:: colors; entry {GREEN()}";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(code)));

	ExpandedType typ = program->root->findType("colors");
	EXPECT_EQ(TypeOperator::VARIANT, typ->__operator);

	Expression eRed = program->root->findFunction("test")->getEntryScope()->getBody();
	EXPECT_EQ(Operator::VARIANT, eRed.op);

	const ExpandedType& typ2 = program->root->getType(eRed);
	EXPECT_EQ(TypeOperator::VARIANT, typ2->__operator);
	}

	TEST(Types, full_VariantType_Switch1){
	string&& code =
	- " colors = type variant{RED, BLUE, GREEN}. \n"
	+ "colors = type variant{RED, BLUE, GREEN}. \n"
	" test = function:: colors {GREEN()} \n"

	"main = function:: int; entry { \n"
	" switch(test()):: int \n"
	" case (GREEN()) {0} \n"
	" case default {1} \n"
	"}";

	XreateManager* man = XreateManager::prepare(move(code));
	int (main)() = (int ()()) man->run();

	EXPECT_EQ(0, main());
	}

	TEST(Types, ast_VariantType2){
	std::string script=
	R"Code(
	- Expression = type
	+ Annotation = type
	variant {
	Num:: int,
	String:: string,
	Func:: {name::string, arguments::[Expression]}
	}.
	)Code";

	std::unique_ptr<XreateManager> program(XreateManager::prepare(move(script)));
	- ExpandedType typ = program->root->findType("Expression");
	+ ExpandedType typ = program->root->findType("Annotation");
	ASSERT_EQ(3, typ.get().fields.size());
	}

	//TEST(Types, A)


	//TOTEST string type
	diff --git a/grammar/xreate.ATG b/grammar/xreate.ATG
	index f534db7..04b9999 100644
	--- a/grammar/xreate.ATG
	+++ b/grammar/xreate.ATG
	@@ -1,653 +1,653 @@
	//TODO add ListLiteral
	//TODO ExprTyped: assign default(none) type

	#include "ast.h"
	#include "ExternLayer.h"
	#include "pass/adhocpass.h"
	#include <string>
	#include <stack>

	#define wprintf(format, ...) \
	char __buffer[100]; \
	wcstombs(__buffer, format, 100); \
	fprintf(stderr, __buffer, __VA_ARGS__)

	using namespace std;

	COMPILER Xreate

	details::incomplete::AST* root = nullptr; // current program unit

	void ensureInitalizedAST(){
	if (root == nullptr) root = new details::incomplete::AST();
	}

	struct {
	std::stack<CodeScope*> scopesOld;
	CodeScope* scope = nullptr;
	} context;

	void pushContextScope(CodeScope* scope){
	context.scopesOld.push(context.scope);
	context.scope = scope;
	}

	void popContextScope(){
	context.scope = context.scopesOld.top();
	context.scopesOld.pop();
	}

	int nextToken()
	{
	scanner->ResetPeek();
	return scanner->Peek()->kind;
	}

	bool checkTokenAfterIdent(int key){
	if (la->kind != _ident) return false;
	return nextToken() == key;
	}

	bool checkParametersList()
	{
	return la->kind == _ident && nextToken() == _lparen;
	}

	bool checkInfix()
	{
	return la->kind == _ident && nextToken() == _ident;
	}

	bool checkIndex()
	{
	return la->kind == _ident && nextToken() == _lbrack;
	}

	bool checkFuncDecl()
	{
	if (la->kind != _ident) return false;

	int token2 = nextToken();
	int token3 = scanner->Peek()->kind;

	return token2 == _assign && (token3 == _function \|\| token3 == _pre);
	}



	bool checkAssignment()
	{
	if (la->kind != _ident) return false;

	scanner->ResetPeek();
	int token2 = scanner->Peek()->kind;
	if (token2 == _lcurbrack) {
	scanner->Peek();
	int token3 = scanner->Peek()->kind;
	if (token3 != _rcurbrack) return false;

	int token4 = scanner->Peek()->kind;
	return token4 == _assign;
	}

	return token2 == _assign;
	}

	void recognizeIdentifier(Expression& i){
	if (!context.scope->recognizeIdentifier(i)){
	root->postponeIdentifier(context.scope, i);
	}
	}

	enum SwitchKind{SWITCH_NORMAL, SWITCH_META};

	CHARACTERS
	letter = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".
	any = ANY - '"'.
	digit = "0123456789".
	cr = '\r'.
	lf = '\n'.
	tab = '\t'.

	TOKENS
	ident = (letter \| '_') {letter \| digit \| '_'}.
	number = (digit \| '-' digit) {digit}.
	string = '"' { any } '"'.
	function = "function".
	pre = "pre".
	lparen = '('.
	rparen = ')'.
	lbrack = '['.
	rbrack = ']'.
	lcurbrack = '{'.
	rcurbrack = '}'.
	equal = "==".
	assign = '='.
	implic = '-' '>'.
	colon = ':'.
	context = "context".
	tagcolon = "::".
	lse = "<=".
	lss = "<".
	gte = ">=".
	gtr = ">".

	ne1 = "!=".
	ne2= "<>".


	COMMENTS FROM "/" TO "/" NESTED
	COMMENTS FROM "//" TO lf

	IGNORE cr + lf + tab

	PRODUCTIONS

	Xreate = (. Function* function; ensureInitalizedAST(); .)
	{( RuleDecl
	\| InterfaceData \| Imprt \| ContextSection
	\| IF(checkFuncDecl()) FDecl<function> (. root->add(function); .)
	\| TDecl
	\| SkipModulesSection
	)} (. .)
	.

	Ident<std::wstring& name>
	= ident (. name = t->val; .).

	VarIdent<Expression& e>
	= ident (. e = Expression(Atom<Identifier_t>(t->val)); .)
	[ lcurbrack (
	ident (. SemErr(coco_string_create("var version as ident is not implemented yet")); .)
	\| number (. Attachments::put<versions::VariableVersion>(e, Atom<Number_t>(t->val).get()); .)
	) rcurbrack ]
	.


	FDecl<Function*& f> = (. std::wstring fname; std::wstring argName; TypeAnnotation typIn; TypeAnnotation typOut; bool flagIsPrefunct = false; Expression binding; .)
	Ident<fname> assign
	[pre (. flagIsPrefunct = true; .)]
	function (. f = new Function(fname); f->isPrefunction = flagIsPrefunct; CodeScope* entry = f->getEntryScope(); .)

	['(' Ident<argName> tagcolon ExprAnnotations<binding> (. f->addBinding(Atom<Identifier_t>(argName), move(binding)); .)
	{',' Ident<argName> tagcolon ExprAnnotations<binding> (. f->addBinding(Atom <Identifier_t>(argName), move(binding));.)
	} ')']

	[ tagcolon
	( IF(flagIsPrefunct) FnTag<f>
	\| Type<typOut>
	)
	{';' FnTag<f> }]
	BDecl<entry> (. entry->getBody().bindType(move(typOut));.)
	.

	ContextSection<>= (. Expression context; Function* f; .)
	"case" "context" tagcolon MetaSimpExpr<context>
	lcurbrack { FDecl<f> (. f->guardContext = context; root->add(f); .)
	} rcurbrack.

	/**
	* TYPES
	*
	*/
	TypeTerm<TypePrimitive& typ> = (. std::wstring tid; .)
	("string" (. typ = TypePrimitive::String;.)
	\| "num" (. typ = TypePrimitive::Num;.)
	\| "int" (. typ = TypePrimitive::Int;.)
	\| "float" (. typ = TypePrimitive::Float;.)
	\| "bool" (. typ = TypePrimitive::Bool; .)
	\| "i8" (. typ = TypePrimitive::I8; .)
	\| "i32" (. typ = TypePrimitive::I32; .)
	\| "i64" (. typ = TypePrimitive::I64; .)
	).

	Type<TypeAnnotation& typ> = (. TypeAnnotation typ2; TypePrimitive typ3; std::wstring tid, field; .)
	(
	TList<typ>
	\| TStruct<typ>
	\| TVariant<typ>
	\| TypeTerm<typ3> (. typ = typ3; .)
	\| IF (checkIndex()) Ident<tid> lbrack
	Ident<field> (. typ = TypeAnnotation(TypeOperator::ACCESS, {}); typ.__valueCustom = Atom<Identifier_t>(tid).get(); typ.fields.push_back(Atom<Identifier_t>(field).get()); .)
	{',' Ident<field> (. typ.fields.push_back(Atom<Identifier_t>(field).get()); .)
	} rbrack

	\| Ident<tid> (. typ = TypeAnnotation(TypeOperator::CUSTOM, {}); typ.__valueCustom = Atom<Identifier_t>(tid).get(); .)
	['(' Type<typ2> (. typ.__operator = TypeOperator::CALL; typ.__operands.push_back(typ2); .)
	{',' Type<typ2> (. typ.__operands.push_back(typ2); .)
	} ')']
	) .

	TList<TypeAnnotation& typ> = (. TypeAnnotation ty; .)
	'[' Type<ty> ']' (. typ = TypeAnnotation(TypeOperator::ARRAY, {ty}); .)
	.

	TStruct<TypeAnnotation& typ> = (. TypeAnnotation t; std::wstring key; size_t keyCounter=0; .)
	lcurbrack
	(
	IF(checkTokenAfterIdent(_tagcolon)) Ident<key> tagcolon Type<t>
	\| Type<t> (. key = to_wstring(keyCounter++); .)

	) (. typ = TypeAnnotation(TypeOperator::STRUCT, {t}); typ.fields.push_back(Atom<Identifier_t>(key).get()); .)
	{',' (
	IF(checkTokenAfterIdent(_tagcolon)) Ident<key> tagcolon Type<t>
	\| Type<t> (. key = to_wstring(keyCounter++); .)

	) (. typ.__operands.push_back(t); typ.fields.push_back(Atom<Identifier_t>(key).get()); .)
	} rcurbrack.

	TVariant<TypeAnnotation& typ>= (. TypeAnnotation t, typVoid(TypeOperator::STRUCT, {}); std::vector<TypeAnnotation> operands; std::vector<Atom<Identifier_t>> keys; std::wstring variant; .)
	"variant" lcurbrack
	Ident<variant> (. t=typVoid; .)
	[tagcolon Type<t>] (. keys.push_back(Atom<Identifier_t>(variant)); operands.push_back(t); .)

	{',' Ident<variant> (. t=typVoid; .)
	[tagcolon Type<t>] (. keys.push_back(Atom<Identifier_t>(variant)); operands.push_back(t); .)
	}
	rcurbrack (. typ = TypeAnnotation(TypeOperator::VARIANT, {}); typ.__operands = operands; typ.addFields(std::move(keys)); .)
	.

	TDecl = (. TypeAnnotation t; std::wstring tname, arg; std::vector<Atom<Identifier_t>> args; .)
	Ident<tname> assign "type"
	['(' Ident<arg> (. args.push_back(Atom<Identifier_t>(arg)); .)
	{',' Ident<arg> (. args.push_back(Atom<Identifier_t>(arg)); .)
	} ')']
	Type<t>'.' (. t.addBindings(move(args)); root->add(move(t), Atom<Identifier_t>(tname)); .)
	.

	ContextDecl<CodeScope * scope> = (. Expression tag; .)
	context tagcolon
	MetaSimpExpr<tag> (. scope->tags.push_back(tag); .)
	{';' MetaSimpExpr<tag> (. scope->tags.push_back(tag); .)
	}.

	VDecl<CodeScope* f> = (. std::wstring vname; Expression var, value;.)
	VarIdent<var> assign ExprTyped<value> (. f->addDeclaration(move(var), move(value)); .)
	.

	BDecl<CodeScope* scope> = lcurbrack (. Expression body; pushContextScope(scope); .)
	{(IF(checkAssignment()) VDecl<scope> '.'
	\| RuleContextDecl<scope>
	\| ContextDecl<scope>'.'
	\| ExprTyped<body> (. scope->setBody(body); .)
	)}
	rcurbrack (. popContextScope(); .)
	.

	IfDecl<Expression& e> = (. Expression cond; ManagedScpPtr blockTrue = root->add(new CodeScope(context.scope)); ManagedScpPtr blockFalse = root->add(new CodeScope(context.scope)); .)
	"if" '(' Expr<cond> ')' (. e = Expression(Operator::IF, {cond}); .)
	tagcolon ExprAnnotations<e>
	BDecl<&blockTrue> "else" BDecl<&blockFalse> (. e.addBlock(blockTrue); e.addBlock(blockFalse); .)
	.

	LoopDecl<Expression& e> =
	(. Expression eIn, eAcc, eFilters; std::wstring varEl, varAcc, contextClass; Expression tagsEl;
	ManagedScpPtr block = root->add(new CodeScope(context.scope)); .)
	"loop"
	("map" '(' Expr<eIn> implic Ident<varEl> (. e = Expression(Operator::MAP, {eIn}); .)
	tagcolon ExprAnnotations<tagsEl> ')' tagcolon ExprAnnotations<e>
	(.
	e.addBindings({Atom<Identifier_t>(varEl)});
	block->addBinding(Atom<Identifier_t>(varEl), move(tagsEl));
	.)
	BDecl<&*block>
	(. e.addBlock(block); .)

	\|"fold"
	("inf" '(' Expr<eAcc> implic Ident<varAcc> ')'
	(.
	e = Expression(Operator::FOLD_INF, {eAcc});
	e.addBindings({Atom<Identifier_t>(varAcc)});
	block->addBinding(Atom<Identifier_t>(varAcc), Expression());
	.)
	tagcolon ExprAnnotations<e> BDecl<&*block>
	(. e.addBlock(block); .)

	\| '(' Expr<eIn> implic Ident<varEl> tagcolon ExprAnnotations<tagsEl> ['\|' Expr<eFilters> ] ',' Expr<eAcc> implic Ident<varAcc>')'
	(.
	e = Expression(Operator::FOLD, {eIn, eAcc});
	e.addBindings({Atom<Identifier_t>(varEl), Atom<Identifier_t>(varAcc)});
	.)
	tagcolon ExprAnnotations<e>
	(.
	block->addBinding(Atom<Identifier_t>(varEl), move(tagsEl));
	block->addBinding(Atom<Identifier_t>(varAcc), Expression());
	.)
	BDecl<&*block>
	(. e.addBlock(block); .)
	)
	\| "context" '(' string (. contextClass = t->val; .)
	')' BDecl<&*block>
	(. e = Expression(Operator::LOOP_CONTEXT, {Expression(Atom<String_t>(std::move(contextClass)))});
	e.addBlock(block);
	.)
	).

	// Switches
	SwitchDecl<Expression& eSwitch, SwitchKind flagSwitchKind> = (. TypeAnnotation typ; eSwitch = Expression(Operator::SWITCH, {}); Expression eCondition; Expression tag;.)
	"switch"
	(
	SwitchVariantDecl<eSwitch>
	- \| lparen Expr<eCondition> rparen tagcolon ExprAnnotations<eSwitch> (. eSwitch.operands.push_back(eCondition);.)
	+ \| lparen ExprTyped<eCondition> rparen tagcolon ExprAnnotations<eSwitch> (. eSwitch.operands.push_back(eCondition);.)
	CaseDecl<eSwitch, flagSwitchKind> {CaseDecl<eSwitch, flagSwitchKind>}
	)
	.

	CaseDecl<Expression& outer, SwitchKind flagSwitchKind> = (. ManagedScpPtr scope = root->add(new CodeScope(context.scope)); Expression condition; .)
	"case"
	( IF(flagSwitchKind == SWITCH_META)
	lparen MetaSimpExpr<condition> rparen BDecl<&*scope> (. Expression exprCase(Operator::CASE, {}); exprCase.addTags({condition}); exprCase.addBlock(scope); outer.addArg(move(exprCase));.)

	\| "default" BDecl<&*scope> (. Expression exprCase(Operator::CASE_DEFAULT, {});
	exprCase.addBlock(scope);
	outer.operands.insert(++outer.operands.begin(), exprCase); .)

	\| lparen CaseParams<&scope> rparen (. ManagedScpPtr scopeBody = root->add(new CodeScope(&scope)); Expression exprCase(Operator::CASE, {}); .)
	BDecl<&*scopeBody> (. exprCase.addBlock(scope); exprCase.addBlock(scopeBody); outer.addArg(move(exprCase)); .)
	).

	CaseParams<CodeScope* scope> = (. Expression condition; Expression guard(Operator::LOGIC_AND, {}); pushContextScope(scope); .)
	ExprTyped<condition> (. guard.addArg(Expression(condition)); .)
	{',' ExprTyped<condition> (. guard.addArg(Expression(condition)); .)
	} (. scope->setBody(guard); popContextScope(); .)
	.

	SwitchVariantDecl<Expression& expr> =
	(. Expression varTested; std::wstring varAlias; bool flagAliasFound = false; expr = Expression(Operator::SWITCH_VARIANT, {}); .)

	"variant" lparen Expr<varTested> [implic Ident<varAlias>
	(. flagAliasFound = true; .)

	- ] rparen tagcolon ExprAnnotations<expr>
	+ ] [tagcolon ExprAnnotations<varTested>] rparen tagcolon ExprAnnotations<expr>
	(. expr.addArg(std::move(varTested));
	if (flagAliasFound) {
	expr.addBindings({Atom<Identifier_t>(varAlias)});

	} else {
	if(varTested.__state != Expression::IDENT){
	SemErr(coco_string_create("Switch variant expects identifier"));

	}

	expr.addBindings({Atom<Identifier_t>(string(varTested.getValueString()))});
	}
	.)

	CaseVariantDecl<expr> {CaseVariantDecl<expr>}
	.

	CaseVariantDecl<Expression& expr> = (. ManagedScpPtr scope = root->add(new CodeScope(context.scope)); std::wstring key; scope->addBinding(Atom<Identifier_t>(string(expr.bindings.front())), Expression()); .)
	"case" lparen Ident<key> rparen (. expr.addArg(root->recognizeVariantConstructor(Atom<Identifier_t>(std::move(key)))); .)
	BDecl<&*scope> (. expr.addBlock(scope); .)
	.

	IntrinsicDecl<Expression& outer>= (. std::wstring name; .)
	"intrinsic" Ident< name> (. outer = Expression(Operator::CALL_INTRINSIC, {}); outer.setValue(Atom<Identifier_t>(name)); .)
	lparen [CalleeParams<outer>] rparen .

	/============================ INTERFACES ===============================/
	Imprt<> =
	"import" "raw" lparen string (. root->__rawImports.push_back(Atom<String_t>(t->val).get()); .)
	rparen '.'.

	InterfaceData<> = "interface" '('
	( "dfa" ')' InterfaceDFA
	\| "extern-c" ')' InterfaceExternC
	\| "cfa" ')' InterfaceCFA
	\| "adhoc" ')' InterfaceAdhoc

	).

	InterfaceAdhoc<> =
	'{' { PrefunctionSchemeDecl } '}'.

	PrefunctionSchemeDecl<> = (. TypeAnnotation typReturn; std::wstring prefName; Expression exprCases; .)
	pre function Ident<prefName> tagcolon Type<typReturn>
	lcurbrack SwitchDecl<exprCases, SWITCH_META> rcurbrack
	(. Expression prefData(Operator::CALL, {Atom<Identifier_t>(prefName), exprCases});
	prefData.bindType(typReturn);
	root->addInterfaceData(Adhoc, move(prefData));
	.).


	InterfaceExternC<> = (. ExternData data; .)
	'{' {IncludeExternDecl<data> \| LibExternDecl<data> } '}'
	(. root->addExternData(move(data)); .)
	.

	LibExternDecl<ExternData& data> = (. std::wstring pkgname, libname; .)
	Ident<libname> assign "library" tagcolon "pkgconfig"
	'(' string (. pkgname = t->val; .)
	')' '.' (. data.addLibrary(Atom<Identifier_t>(libname), Atom<String_t>(pkgname)); .)
	.

	IncludeExternDecl<ExternData& data> = (. Expression inc; .)
	"include" StructLiteral<inc> '.' (. data.addIncludeDecl(move(inc)); .)
	.

	InterfaceDFA<> = '{' { InstructDecl } '}' .

	InstructDecl = (.Operator op; Expression tag;
	Expression scheme;
	std::vector<Expression>& tags = scheme.operands;
	tags.push_back(Expression()); /* return value */ .)
	"operator" InstructAlias<op> tagcolon '(' (.scheme.setOp(op); .)
	[
	MetaSimpExpr<tag> (. tags.push_back(tag); .)
	{
	',' MetaSimpExpr<tag> (. tags.push_back(tag); .)
	}
	] ')' [ implic MetaSimpExpr<tag> (. tags[0] = tag; .)
	] (. root->addDFAData(move(scheme)); .)
	'.'.

	InstructAlias<Operator& op> =
	(
	"map" (. op = Operator::MAP; .)
	\| "list_range" (. op = Operator::LIST_RANGE; .)
	\| "list" (. op = Operator::LIST; .)
	\| "fold" (. op = Operator::FOLD; .)
	\| "index" (. op = Operator::INDEX; .)
	).


	InterfaceCFA<> = '{' { InstructCFADecl } '}' .

	InstructCFADecl<> = (.Operator op; Expression tag;
	Expression scheme;
	std::vector<Expression>& tags = scheme.operands; .)

	"operator" InstructAlias<op> tagcolon (. scheme.setOp(op); .)
	[
	MetaSimpExpr<tag> (. tags.push_back(tag); .)
	{
	',' MetaSimpExpr<tag> (. tags.push_back(tag); .)
	}
	] '.' (. root->addInterfaceData(CFA, move(scheme)); .).

	/============================ METAPROGRAMMING ===============================/
	// TagsDecl<CodeScope* f> = (. Expression tag; TagModifier mod = TagModifier::NONE; .)
	// ':' { MetaSimpExpr<tag> (. /f.addTag(std::move(tag), mod); / .)
	// }.


	FnTag<Function* f> = (. Expression tag; TagModifier mod = TagModifier::NONE; .)
	MetaSimpExpr<tag>
	['-' TagMod<mod>] (. f->addTag(std::move(tag), mod); .).

	TagMod<TagModifier& mod> =
	( "assert" (. mod = TagModifier::ASSERT; .)
	\| "require" (. mod = TagModifier::REQUIRE; .)
	).

	RuleDecl<> =
	"rule" tagcolon (. RuleArguments args; RuleGuards guards; DomainAnnotation typ; std::wstring arg; .)
	'(' Ident<arg> tagcolon Domain<typ> (. args.add(arg, typ); .)
	{',' Ident<arg> tagcolon Domain<typ> (. args.add(arg, typ); .)
	} ')'
	["case" RGuard<guards> {',' RGuard<guards>}]
	'{' RBody<args, guards> '}' .

	/* - TODO use RGuard for guards-*/
	RuleContextDecl<CodeScope* scope> = (.Expression eHead, eGuards, eBody; .)
	"rule" "context" tagcolon MetaSimpExpr<eHead>
	"case" lparen MetaSimpExpr<eGuards> rparen
	'{' MetaSimpExpr<eBody> '}' (.scope->contextRules.push_back(Expression(Operator::CONTEXT_RULE, {eHead, eGuards, eBody})); .).

	Domain<DomainAnnotation& dom> =
	(
	"function" (. dom = DomainAnnotation::FUNCTION; .)
	\| "variable" (. dom = DomainAnnotation::VARIABLE; .)
	).

	RGuard<RuleGuards& guards>= (. Expression e; .)
	MetaExpr<e> (. guards.add(std::move(e)); .).

	MetaExpr<Expression& e>= (.Operator op; Expression e2; .)
	MetaExpr2<e>
	[MetaOp<op> MetaExpr2<e2> (. e = Expression(op, {e, e2}); .)
	].

	MetaExpr2<Expression& e>=
	(
	'(' MetaExpr<e> ')'
	\| MetaSimpExpr<e>
	).

	MetaSimpExpr<Expression& e>= (. std::wstring i1, infix; Expression e2; .)
	( '-' MetaSimpExpr<e2> (. e = Expression(Operator::NEG, {e2}); .)
	\| IF(checkParametersList()) Ident<i1> (. e = Expression(Operator::CALL, {Expression(Atom<Identifier_t>(i1))}); .)
	'(' [ MetaCalleeParams<e> ] ')'
	\| IF(checkInfix()) Ident<i1> Ident<infix> MetaSimpExpr<e2>
	(. e = Expression(Operator::CALL, {Expression(Atom<Identifier_t>(infix))});
	e.addArg(Expression(Atom<Identifier_t>(i1)));
	e.addArg(std::move(e2));
	.)
	\| Ident<i1> (. e = Expression(Operator::CALL, {Atom<Identifier_t>(i1)}); .)
	).

	MetaCalleeParams<Expression& e> = (. Expression e2; .)
	MetaSimpExpr<e2> (. e.addArg(Expression(e2)); .)
	{',' MetaSimpExpr<e2> (. e.addArg(Expression(e2)); .)
	}.

	RBody<const RuleArguments& args, const RuleGuards& guards> =
	(. Expression e; std::wstring msg; .)
	"warning" MetaExpr<e> ["message" string (. msg = t->val; .)
	] (. root->add(new RuleWarning(RuleArguments(args), RuleGuards(guards), std::move(e), Atom<String_t>(msg))); .)
	.

	MetaOp< Operator& op> =
	implic (. op = Operator::IMPL; .)
	.

	/============================ Expressions ===============================/
	ExprAnnotations<Expression& e> = (. TypeAnnotation typ; std::list<Expression> tags; Expression tag; e.tags.clear();.)
	Type<typ> (. e.bindType(move(typ)); .)
	{';' MetaSimpExpr<tag> (. tags.push_back(tag); .)
	} (. e.addTags(tags); .)
	.

	ExprTyped<Expression&e> = Expr<e> [tagcolon ExprAnnotations<e>].

	Expr< Expression& e> (. Operator op; Expression e2; .)
	= ExprArithmAdd<e>
	[ RelOp<op>
	ExprArithmAdd<e2> (. e = Expression(op, {e, e2}); .)
	].

	ExprArithmAdd< Expression& e>= (. Operator op; Expression e2; .)
	ExprArithmMul< e>
	[ AddOp< op>
	ExprArithmAdd< e2> (. e = Expression(op, {e, e2});.)
	].

	ExprArithmMul< Expression& e> (. Operator op; Expression e2; .)
	= ExprPostfix< e>
	[ MulOp< op>
	ExprArithmMul< e2> (. e = Expression(op, {e, e2}); .)
	].

	ExprPostfix<Expression& e>
	= Term<e>
	- [lbrack (. e = Expression(Operator::INDEX, {e}); .)
	- CalleeParams<e> rbrack
	+ [ (. e = Expression(Operator::INDEX, {e}); .)
	+ {lbrack CalleeParams<e> rbrack }
	].


	Term< Expression& e> (. std::wstring name; e = Expression(); .)
	=
	(IF (checkParametersList()) Ident< name>
	(. e = Expression(Operator::CALL, {Atom<Identifier_t>(name)}); root->recognizeVariantConstructor(e); .)
	'(' [CalleeParams<e>] ')'
	\| VarIdent<e> (. recognizeIdentifier(e); .)
	\| ListLiteral<e> (. /* tuple */.)
	\| StructLiteral<e> (. /* struct */.)
	\| LoopDecl<e>
	\| IfDecl<e>
	\| SwitchDecl<e, SWITCH_NORMAL>
	\| AdhocDecl<e>
	\| IntrinsicDecl<e>
	\| number (. e = Expression(Atom<Number_t>(t->val)); .)
	\| string (. e = Expression(Atom<String_t>(t->val)); .)
	\| "true" (. e = Expression(Atom<Number_t>(1)); e.bindType(TypePrimitive::Bool); .)
	\| "false" (. e = Expression(Atom<Number_t>(0)); e.bindType(TypePrimitive::Bool); .)
	\| '-' Term<e> (. e = Expression(Operator::NEG, {e}); .)
	\| '(' ExprTyped<e> ')'
	).

	StructLiteral<Expression& e> = (. std::wstring key; Expression val; std::list<Atom<Identifier_t>> keys; size_t keyCounter=0; .)
	lcurbrack
	(IF(checkTokenAfterIdent(_assign)) Ident<key> '=' Expr<val>
	\| Expr<val> (. key = to_wstring(keyCounter++); .)
	) (. keys.push_back(Atom<Identifier_t>(key)); e = Expression(Operator::LIST_NAMED, {val}); .)
	{',' (IF(checkTokenAfterIdent(_assign)) Ident<key> '=' Expr<val>
	\| Expr<val> (. key = to_wstring(keyCounter++); .)
	) (. e.addArg(Expression(val)); keys.push_back(Atom<Identifier_t>(key)); .)
	} rcurbrack (. e.addBindings(keys.begin(), keys.end()); .)
	.

	ListLiteral<Expression& e> = (. Expression eFrom, eTo; .)
	'['
	[ Expr<eFrom> (. e.addArg(Expression(eFrom)); .)
	(".." Expr<eTo> (. e.addArg(Expression(eTo)); e.setOp(Operator::LIST_RANGE); .)
	\|{',' Expr<eFrom> (. e.addArg(Expression(eFrom)); .)
	} (. e.setOp(Operator::LIST); .)
	) ] ']'.

	AdhocDecl<Expression& e> = (. Expression command; .)
	"ad" "hoc" MetaSimpExpr<command> (. adhoc::AdhocExpression exprAdhoc; exprAdhoc.setCommand(command); e = exprAdhoc; .).

	CalleeParams<Expression& e> = (. Expression e2; .)
	ExprTyped<e2> (. e.addArg(Expression(e2)); .)
	{',' ExprTyped<e2> (. e.addArg(Expression(e2)); .)
	}.

	AddOp< Operator& op>
	= (. op = Operator::ADD; .)
	( '+'
	\| '-' (. op = Operator::SUB; .)
	).

	MulOp< Operator& op>
	= (. op = Operator::MUL; .)
	( '*'
	\| '/' (. op = Operator::DIV; .)
	).

	RelOp< Operator& op>
	= (. op = Operator::EQU; .)
	( equal
	\| (ne1 \| ne2) (. op = Operator::NE; .)

	\| lse (. op = Operator::LSE; .)
	\| lss (. op = Operator::LSS; .)

	\| gte (. op = Operator::GTE; .)
	\| gtr (. op = Operator::GTR; .)

	).

	SkipModulesSection = "module" '{' {ANY} '}'.

	END Xreate.

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